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tops10and20_integ_tools_v9_3-aug-86
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tools/crc/help/nag.lbr
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A02ABF Modulus of a complex number
A02ACF Quotient of two complex numbers
C05ADF Zero of continuous function of one variable,
in a given interval, Bus & Dekker algorithm
C05AGF Zero of continuous function of one variable,
from a given starting value,
searching for interval and Bus & Dekker algorithm
C05AJF Zero of continuous function of one variable,
from a given starting value, continuation method
C05AVF Zero of continuous function of one variable,
search for interval containing zero (reverse communication)
C05AXF Zero of continuous function of one variable,
from a given starting value, continuation method (reverse communication)
C05AZF Zero of continuous function of one variable,
in a given interval, Bus & Dekker algorithm (reverse communication)
C05NBF Solution of a system of non-linear equations (easy-to-use),
using function values only
C05NCF Solution of a system of non-linear equations (comprehensive),
using function values only
C05PBF Solution of a system of non-linear equations (easy-to-use),
using first derivatives
C05PCF Solution of a system of non-linear equations (comprehensive),
using first derivatives
C05ZAF Check user's routine for calculating first derivatives
D05AAF Linear non-singular Fredholm integral equation, 2nd kind, split kernel
D05ABF Linear non-singular Fredholm integral equation, 2nd kind, smooth kernel
G01AAF Simple descriptive statistics, 1 variable, from raw data
G01ABF Simple descriptive statistics, 2 variables, from raw data
G01ADF Simple descriptive statistics, 1 variable, from frequency table
G01AEF Frequency table from raw data
G01AFF Two-way contingency table analysis
G01AGF Lineprinter scatterplot of 2 variables
G01AHF Lineprinter scatterplot of 1 variable against Normal scores
G01AJF Lineprinter histogram of 1 variable
G01BAF Student's t-distribution
G01BBF F (variance ratio) distribution
G01BCF Chi-square distribution
G01BDF Beta distribution of 1st kind
G01CAF Inverse Student's t-distribution
G01CBF Inverse F (variance ratio) distribution
G01CCF Inverse Chi-square distribution
G01CDF Inverse Beta distribution of 1st kind
G01CEF Inverse Normal distribution
G01DAF Calculation of Normal scores
D02AGF System of ordinary differential equations, boundary value problem,
shooting and matching technique, general parameters to be determined,
allowing interior matching-point
D02BAF System of ordinary differential equations, initial value problem,
Runge-Kutta-Merson method, (simple driver), over a range
D02BBF System of ordinary differential equations, initial value problem,
Runge-Kutta-Merson method, (simple driver),
over a range with intermediate output
D02BDF System of ordinary differential equations, initial value problem,
Runge-Kutta-Merson method, (simple driver),
over a range with global error estimate and stiffness check
D02BGF System of ordinary differential equations, initial value problem,
Runge-Kutta-Merson method, (simple driver),
until a component of the solution attains a given value
D02BHF System of ordinary differential equations, initial value problem,
Runge-Kutta-Merson method, (simple driver),
until a function of the solution is zero
D02CAF System of ordinary differential equations, initial value problem,
variable-order variable-step Adams method, (simple driver),
over a range
D02CBF System of ordinary differential equations, initial value problem,
variable-order variable-step Adams method, (simple driver),
over a range with intermediate output
D02CGF System of ordinary differential equations, initial value problem,
variable-order variable-step Adams method, (simple driver),
until a component of the solution attains a given value
D02CHF System of ordinary differential equations, initial value problem,
variable-order variable-step Adams method, (simple driver),
until a function of the solution is zero
D02EAF System of ordinary differential equations, initial value problem,
variable-order variable-step Gear method for stiff systems, (simple driver),
over a range
D02EBF System of ordinary differential equations, initial value problem,
variable-order variable-step Gear method for stiff systems, (simple driver),
over a range with intermediate output
D02EGF System of ordinary differential equations, initial value problem,
variable-order variable-step Gear method for stiff systems, (simple driver),
until a component of the solution attains a given value
D02EHF System of ordinary differential equations, initial value problem,
variable-order variable-step Gear method for stiff systems, (simple driver),
until a function of the solution is zero
D02GAF System of ordinary differential equations, boundary value problem,
finite difference technique with deferred correction, Pereyra's method,
simple non-linear problem
D02GBF System of ordinary differential equations, boundary value problem,
finite difference technique with deferred correction, Pereyra's method,
general linear problem
D02HAF System of ordinary differential equations, boundary value problem,
shooting and matching technique, boundary values to be determined
D02HBF System of ordinary differential equations, boundary value problem,
shooting and matching technique, general parameters to be determined
D02JAF System of ordinary differential equations, boundary value problem,
collocation and least-squares, single N-th order linear equation
D02JBF System of ordinary differential equations, boundary value problem,
collocation and least-squares, system of 1st order linear equations
D02KAF Second-order Sturm-Liouville problems,
regular system, finite range, eigenvalue only
D02KDF Second-order Sturm-Liouville problems,
regular/singular system, finite/infinite range, eigenvalue only
D02KEF Second-order Sturm-Liouville problems,
regular/singular system, finite/infinite range, eigenvalue and eigenfunction
D02PAF System of ordinary differential equations, initial value problem,
integrating over a range, (facilities for error-control and interrupts),
Runge-Kutta-Merson method
D02QAF System of ordinary differential equations, initial value problem,
integrating over a range, (facilities for error-control and interrupts),
variable-order variable step Adams method
D02QBF System of ordinary differential equations, initial value problem,
integrating over a range, (facilities for error-control and interrupts),
variable-order variable step Gear method for stiff systems
D02RAF System of ordinary differential equations, boundary value problem,
finite difference technique with deferred correction, Pereyra's method,
general non-linear problem, with continuation facility
D02SAF System of ordinary differential equations, boundary value problem,
shooting and matching technique, general parameters to be determined,
subject to extra algebraic equations
D02TGF System of ordinary differential equations, boundary value problem,
collocation and least-squares, system of N-th order linear equations
D02XAF System of ordinary differential equations, initial value problem,
interpolation of solution produced by D02PAF, all components
D02XBF System of ordinary differential equations, initial value problem,
interpolation of solution produced by D02PAF, one component
D02XGF System of ordinary differential equations, initial value problem,
interpolation of solution produced by D02QAF or D02QBF, all components
D02XHF System of ordinary differential equations, initial value problem,
interpolation of solution produced by D02QAF or D02QBF, one component
D02YAF System of ordinary differential equations, initial value problem,
Runge-Kutta-Merson method for integration over one step
D03EAF Partial differential equations, elliptic,
Laplace's equation in 2-D for an arbitrary domain
D03EBF Partial differential equations, elliptic,
Solution of finite difference equations by Strongly Implicit Procedure,
for 5-point 2-D molecule, iterate to convergence
D03ECF Partial differential equations, elliptic,
Solution of finite difference equations by Strongly Implicit Procedure,
for 7-point 3-D molecule, iterate to convergence
D03MAF Triangulation of a plane region
D03PAF Partial differential equations, parabolic,
one space variable, method of lines, single equation
D03PBF Partial differential equations, parabolic,
one space variable, method of lines, simple system
D03PGF Partial differential equations, parabolic,
one space variable, method of lines, general system
D03UAF Partial differential equations, elliptic,
Solution of finite difference equations by Strongly Implicit Procedure,
for 5-point 2-D molecule, one iteration
D03UBF Partial differential equations, elliptic,
Solution of finite difference equations by Strongly Implicit Procedure,
for 7-point 3-D molecule, one iteration
D04AAF Numerical differentiation of a function of one real variable,
derivatives up to order 14
E01AAF Interpolated values, one variable,
data at unequally spaced points, Aitken's technique
E01ABF Interpolated values, one variable,
data at equally spaced points, Everett's formula
E01ACF Interpolated values, two variables,
data on rectangular grid, fitting bicubic spline
E01AEF Interpolating functions,
polynomial interpolant, data may include derivative values
E01BAF Interpolating functions, cubic spline interpolant
E01RAF Interpolating functions, rational interpolant
E01RBF Interpolated values, evaluate rational interpolant computed by E01RAF
E02ACF Minimax curve fit by polynomials
E02ADF Least-squares curve fit by polynomials,
arbitrary data points
E02AEF Evaluation of fitted functions, polynomial in one variable,
from Chebyshev series form (simplified parameter list)
E02AFF Least-squares curve fit by polynomials,
special data points (including interpolation)
E02AGF Least-squares curve fit by polynomials,
arbitrary data points, values and derivatives may be constrained
E02AHF Derivative of fitted polynomial in Chebyshev series form
E02AJF Integral of fitted polynomial in Chebyshev series form
E02AKF Evaluation of fitted functions, polynomial in one variable,
from Chebyshev series form
E02BAF Least-squares curve fit by cubic splines (including interpolation)
E02BBF Evaluation of fitted functions, cubic spline as E02BAF,
function only
E02BCF Evaluation of fitted functions, cubic spline as E02BAF,
function and derivatives
E02BDF Evaluation of fitted functions, cubic spline as E02BAF,
definite integral
E02CAF Least-squares surface fit by polynomials, for data on lines
E02CBF Evaluation of fitted functions, polynomial in 2 variables as E02CAF
E02DAF Least-squares surface fit by bicubic splines
E02DBF Evaluation of fitted functions, bicubic spline as E02DAF
E02GAF L(1)-approximation by general linear function
E02GBF L(1)-approximation by general linear function
subject to linear inequality constraints
E02GCF L(infinity)-approximation by general linear function
E02RAF Pade-approximants
E02RBF Evaluation of fitted functions, rational function as E02RAF
E02ZAF Sort 2-D data into panels for fitting or evaluating bicubic splines
F01AAF Real matrix, approximate inverse
F01ABF Real symmetric positive-definite matrix, accurate inverse
(simplified parameter list)
F01ACF Real symmetric positive-definite matrix, accurate inverse
F01ADF Real symmetric positive-definite matrix, approximate inverse
F01AEF Reduction to standard form, generalised real symmetric eigenproblem,
Ax=kBx with B positive-definite
F01AFF Backtransformation of eigenvectors from those of reduced forms,
real symmetric eigenproblem Ax=kBx or ABx=kx, after reduction to standard
F01AGF Reduction by similarity transformations,
real symmetric matrix to tridiagonal form, full storage
F01AHF Backtransformation of eigenvectors from those of reduced forms,
real symmetric matrix, after reduction to tridiagonal, full storage
F01AJF Reduction by similarity transformations,
real symmetric matrix to tridiagonal form, full storage,
accumulating product of transformations
F01AKF Reduction by similarity transformations,
real matrix to upper Hessenberg form
F01ALF Backtransformation of eigenvectors from those of reduced forms,
real matrix, after reduction to upper Hessenberg
F01AMF Reduction by similarity transformations,
complex matrix to upper Hessenberg form
F01ANF Backtransformation of eigenvectors from those of reduced forms,
complex matrix, after reduction to upper Hessenberg
F01APF Reduction by similarity transformations,
accumulation of product of transformations generated by F01AKF
F01ATF Balancing by diagonal similarity transformations, real matrix
F01AUF Backtransformation of eigenvectors from those of reduced forms,
real matrix, after balancing
F01AVF Balancing by diagonal similarity transformations, complex matrix
F01AWF Backtransformation of eigenvectors from those of reduced forms,
complex matrix, after balancing
F01AXF QR-factorisation, real m x n matrix (m>=n) with column pivoting
F01AYF Reduction by similarity transformations,
real symmetric matrix to tridiagonal form, packed storage
F01AZF Backtransformation of eigenvectors from those of reduced forms,
real symmetric matrix, after reduction to tridiagonal, packed storage
F01BCF Reduction by similarity transformations,
complex Hermitian matrix to real tridiagonal form
F01BDF Reduction to standard form, generalised real symmetric eigenproblem,
ABx=kx or BAx=kx with B positive-definite
F01BEF Backtransformation of eigenvectors from those of reduced forms,
real symmetric eigenproblem BAx=kx, after reduction to standard
F01BLF Pseudo-inverse and rank of a real m x n matrix (m>=n)
F01BNF LLH-factorisation, complex Hermitian positive-definite matrix
F01BPF Complex Hermitian positive-definite matrix, inverse
F01BQF LDLT-factorisation of A+E, with A symmetric and E diagonal,
packed storage
F01BRF LU-factorisation, real sparse matrix
F01BSF LU-factorisation, real sparse matrix with same sparsity pattern
as a matrix previously factorised by F01BRF
F01BTF LU-factorisation, real matrix
F01BUF ULDLTUT-factorisation, real symmetric positive-definite band matrix
F01BVF Reduction to standard form, generalised real symmetric eigenproblem,
Ax=kBx with A and B band matrices and B positive-definite
F01BWF Reduction by similarity transformations,
real symmetric band matrix to tridiagonal form
F01BXF LLT-factorisation, real symmetric positive-definite matrix
F01CAF Null matrix initialisation
F01CBF Unit matrix initialisation
F01CDF Matrix addition
F01CEF Matrix subtraction
F01CFF Partial matrix copy
F01CGF Partial matrix addition
F01CHF Partial matrix subtraction
F01CKF Matrix multiplication
F01CLF Matrix multiplication by transpose
F01CMF Matrix copy
F01CNF Copy vector to row of matrix
F01CPF Vector copy
F01CQF Null vector initialisation
F01CRF Matrix transposition
F01CSF Multiply vector by symmetric matrix (packed storage)
F01DAF Scalar product added to initial value, real vectors,
basic precision arithmetic
F01DBF Scalar product added to initial value, real vectors,
additional precision arithmetic
F01DCF Scalar product, added to initial value, complex vectors,
basic precision arithmetic
F01DDF Scalar product, added to initial value, complex vectors,
additional precision arithmetic
F01DEF Scalar product of two real vectors
F01LBF LU-factorisation, real band matrix
F01LZF Reduction by similarity transformations,
real matrix to bidiagonal form
F01MCF LDLT-factorisation, real symmetric positive-definite
variable-bandwidth matrix
F01QAF QR-factorisation, real m x n matrix (m>=n)
F01QBF RQ-factorisation, real m x n matrix (m<=n)
F02AAF Real symmetric matrix, (black box), all eigenvalues
F02ABF Real symmetric matrix, (black box), all eigenvalues and eigenvectors
F02ADF Generalised real symmetric eigenproblem Ax=kBx with B positive-definite,
(black box), all eigenvalues
F02AEF Generalised real symmetric eigenproblem Ax=kBx with B positive-definite,
(black box), all eigenvalues and eigenvectors
F02AFF Real matrix, (black box), all eigenvalues
F02AGF Real matrix, (black box), all eigenvalues and eigenvectors
F02AJF Complex matrix, (black box), all eigenvalues
F02AKF Complex matrix, (black box), all eigenvalues and eigenvectors
F02AMF Real symmetric matrix, all eigenvalues and eigenvectors,
after reduction to tridiagonal form by F01AJF, QL algorithm
F02ANF Complex upper Hessenberg matrix, all eigenvalues, LR algorithm
F02APF Real upper Hessenberg matrix, all eigenvalues, QR algorithm
F02AQF Real matrix, all eigenvalues and eigenvectors,
after reduction to upper Hessenberg form by F01AKF & F01APF, QR algorithm
F02ARF Complex matrix, all eigenvalues and eigenvectors,
after reduction to upper Hessenberg form by F01AMF, LR algorithm
F02AVF Real symmetric tridiagonal matrix, all eigenvalues, QL algorithm
F02AWF Complex Hermitian matrix, (black box), all eigenvalues
F02AXF Complex Hermitian matrix, (black box), all eigenvalues and eigenvectors
F02AYF Complex Hermitian matrix, all eigenvalues and eigenvectors,
after reduction to real tridiagonal form by F01BCF, QL algorithm
F02BBF Real symmetric matrix, (black box), selected eigenvalues and eigenvectors
F02BCF Real matrix, (black box), selected eigenvalues and eigenvectors
F02BDF Complex matrix, (black box), selected eigenvalues and eigenvectors
F02BEF Real symmetric tridiagonal matrix, selected eigenvalues and eigenvectors,
bisection and inverse iteration
F02BFF Real symmetric tridiagonal matrix, selected eigenvalues, bisection
F02BJF Generalised eigenproblem Ax=kBx, QZ algorithm, real matrices,
(black box), all eigenvalues and (optionally) eigenvectors
F02BKF Real upper Hessenberg matrix, selected eigenvectors, inverse iteration
F02BLF Complex upper Hessenberg matrix, selected eigenvectors, inverse iteration
F02GJF Generalised eigenproblem Ax=kBx, QZ algorithm, complex matrices,
(black box), all eigenvalues and (optionally) eigenvectors
F02SDF Generalised real eigenproblem Ax=kBx, with A and B band matrices,
eigenvector by inverse iteration
F02SZF Singular value decomposition of a real bidiagonal matrix
F02WAF Singular value decomposition of a real m x n matrix,
singular values and right singular vectors, (m>=n)
F02WBF Singular value decomposition of a real m x n matrix,
singular values and right singular vectors, (m<=n)
F02WCF Singular value decomposition of a real m x n matrix,
singular values and left and right singular vectors
F02WDF Singular value decomposition of a real m x n matrix,
singular values and (optionally) right singular vectors,
optionally or conditionally following QU-factorisation (m>=n)
G05CAF Pseudo-random real numbers, uniform distribution over (0.0,1.0)
G05CBF Initialise random number generating routines,
to give a repeatable sequence
G05CCF Initialise random number generating routines,
to give non-repeatable sequence
G05CFF Save state of random number generating routines
G05CGF Restore state of random number generating routines
G05DAF Pseudo-random real numbers, uniform distribution over (A,B)
G05DBF Pseudo-random real numbers, exponential distribution
G05DCF Pseudo-random real numbers, logistic distribution
G05DDF Pseudo-random real numbers, Normal distribution (A,B)
G05DEF Pseudo-random real numbers, lognormal distribution
G05DFF Pseudo-random real numbers, Cauchy distribution
G05DGF Pseudo-random real numbers, Gamma distribution (G,H)
G05DHF Pseudo-random real numbers, Chi-square distribution
G05DJF Pseudo-random real numbers, Student's t-distribution
G05DKF Pseudo-random real numbers, Snedecor's F-distribution
G05DLF Pseudo-random real numbers, Beta distribution of the 1st kind
G05DMF Pseudo-random real numbers, Beta distribution of the 2nd kind
G05DPF Pseudo-random real numbers, Weibull distribution
G05DYF Pseudo-random integer from uniform distribution
G05DZF Pseudo-random logical value
G05EAF Set up reference vector for multivariate Normal distribution
G05EBF Set up reference vector for generating pseudo-random integers,
uniform distribution
G05ECF Set up reference vector for generating pseudo-random integers,
Poisson distribution
G05EDF Set up reference vector for generating pseudo-random integers,
binomial distribution
G05EEF Set up reference vector for generating pseudo-random integers,
negative binomial distribution
G05EFF Set up reference vector for generating pseudo-random integers,
hypergeometric distribution
G05EGF Set up reference vector for univariate ARMA time-series model
G05EHF Pseudo-random permutation of an integer vector
G05EJF Pseudo-random sample from an integer vector
G05EWF Generate next term from ARMA time-series using G05EGF vector
G05EXF Set up reference vector from supplied cumulative distribution function
or probability distribution function
G05EYF Pseudo-random integer from reference vector
G05EZF Pseudo-random multivariate Normal vector from reference vector
F03AAF Determinant, (black box), real matrix
F03ABF Determinant, (black box), real symmetric positive-definite matrix
F03ACF Determinant, (black box), real symmetric positive-definite band matrix
F03ADF Determinant, (black box), complex matrix
F03AEF LLT-factorisation and determinant,
real symmetric positive-definite matrix
F03AFF LU-factorisation and determinant, real matrix
F03AGF LLT-factorisation and determinant,
real symmetric positive-definite band matrix
F03AHF LU-factorisation and determinant, complex matrix
F03AMF Determinant of a complex Hermitian positive-definite matrix,
after factorisation by F01BNF
M01AAF Leaving vector unchanged provide an index to its sorted order,
real numbers, ascending order
M01ABF Leaving vector unchanged provide an index to its sorted order,
real numbers, descending order
M01ACF Leaving vector unchanged provide an index to its sorted order,
integers, ascending order
M01ADF Leaving vector unchanged provide an index to its sorted order,
integers, descending order
M01AEF Sort the rows of a matrix on keys in an index column, real numbers,
ascending order
M01AFF Sort the rows of a matrix on keys in an index column, real numbers,
descending order
M01AGF Sort the rows of a matrix on keys in an index column, integers,
ascending order
M01AHF Sort the rows of a matrix on keys in an index column, integers,
descending order
M01AJF Sort a vector and provide an index to the original order, real numbers,
ascending order
M01AKF Sort a vector and provide an index to the original order, real numbers,
descending order
M01ALF Sort a vector and provide an index to the original order, integers,
ascending order
M01AMF Sort a vector and provide an index to the original order, integers,
descending order
M01ANF Sort a vector, Singleton's implementation of Quicksort, real numbers,
ascending order
M01APF Sort a vector, Singleton's implementation of Quicksort, real numbers,
descending order
M01AQF Sort a vector, Singleton's implementation of Quicksort, integers,
ascending order
M01ARF Sort a vector, Singleton's implementation of Quicksort, integers,
descending order
M01BAF Sort a vector, Singleton's implementation of Quicksort, character data,
reverse alphanumeric order
M01BBF Sort a vector, Singleton's implementation of Quicksort, character data,
alphanumeric order
M01BCF Sort the columns of a matrix on keys in an index row, character data,
reverse alphanumeric order
M01BDF Sort the columns of a matrix on keys in an index row, character data,
alphanumeric order
F05AAF Schmidt orthogonalisation of N vectors of order M
F05ABF Approximate 2-norm of a vector
G02BAF Pearson product-moment correlation coefficients, all variables,
no missing values
G02BBF Pearson product-moment correlation coefficients, all variables,
casewise treatment of missing values
G02BCF Pearson product-moment correlation coefficients, all variables,
pairwise treatment of missing values
G02BDF "Correlation-like" coefficients (about zero), all variables,
no missing values
G02BEF "Correlation-like" coefficients (about zero), all variables,
casewise treatment of missing values
G02BFF "Correlation-like" coefficients (about zero), all variables,
pairwise treatment of missing values
G02BGF Pearson product-moment correlation coefficients, subset of variables,
no missing values
G02BHF Pearson product-moment correlation coefficients, subset of variables,
casewise treatment of missing values
G02BJF Pearson product-moment correlation coefficients, subset of variables,
pairwise treatment of missing values
G02BKF "Correlation-like" coefficients (about zero), subset of variables,
no missing values
G02BLF "Correlation-like" coefficients (about zero), subset of variables,
casewise treatment of missing values
G02BMF "Correlation-like" coefficients (about zero), subset of variables,
pairwise treatment of missing values
G02BNF Kendall/Spearman non-parametric rank correlation coefficients,
no missing values, overwriting input data
G02BPF Kendall/Spearman non-parametric rank correlation coefficients,
casewise treatment of missing values, overwriting input data
G02BQF Kendall/Spearman non-parametric rank correlation coefficients,
no missing values, preserving input data
G02BRF Kendall/Spearman non-parametric rank correlation coefficients,
casewise treatment of missing values, preserving input data
G02BSF Kendall/Spearman non-parametric rank correlation coefficients,
pairwise treatment of missing values
G02CAF Simple linear regression with constant term, no missing values
G02CBF Simple linear regression without constant term, no missing values
G02CCF Simple linear regression with constant term, missing values
G02CDF Simple linear regression without constant term, missing values
G02CEF Service routines for multiple linear regression,
select elements from vectors and matrices
G02CFF Service routines for multiple linear regression,
re-order elements of vectors and matrices
G02CGF Multiple linear regression,
from correlation coefficients, with constant term
G02CHF Multiple linear regression,
from "correlation-like" coefficients, without constant term
G02CJF Multiple linear regression,
from original data, several dependent variables
G04ADF Three-way analysis of variance, Latin square design
G04AEF One-way analysis of variance, subgroups of unequal size
G04AFF Two-way analysis of variance,
cross-classification, subgroups of equal size
G04AGF Two-way analysis of variance,
hierarchial classification, subgroups of unequal size
G13AAF Univariate series, seasonal and non-seasonal differencing
G13ABF Univariate series, sample autocorrelation function
G13ACF Univariate series, partial autocorrelations from autocorrelations
G13ADF Univariate series, preliminary estimation of ARMA model
G13AEF Univariate series, estimation of seasonal ARIMA model (comprehensive)
G13AFF Univariate series, estimation of seasonal ARIMA model (easy-to-use)
G13AGF Univariate series, update state set for forecasting
G13AHF Univariate series, forecasting from state set
G13AJF Univariate series, state set and forecasts
from fully specified seasonal ARIMA model
G13BAF Bivariate series, filtering a time series by an ARIMA model
G13BCF Bivariate series, cross correlations
G13CAF Univariate series, smoothed sample spectrum
using rectangular, Bartlett, Tukey or Parzen lag window
G13CBF Univariate series, smoothed sample spectrum
using spectral smoothing by the trapezium frequency (Daniell) window
G13CCF Bivariate series, smoothed sample cross spectrum
using rectangular, Bartlett, Tukey or Parzen lag window
G13CDF Bivariate series, smoothed sample cross spectrum
using spectral smoothing by the trapezium frequency (Daniell) window
G13CEF Bivariate series, cross amplitude spectrum, squared coherency,
bounds for univariate and bivariate (cross) spectra
G13CFF Bivariate series, gain, phase,
bounds for univariate and bivariate (cross) spectra
G13CGF Bivariate series, noise spectrum, bounds,
impulse response function and its standard error
G08AAF Sign test on two paired samples
G08ABF Wilcoxon matched pairs signed ranks test on two paired samples
G08ACF Median test on two samples of unequal size
G08ADF Mann-Whitney U-test on two samples of unequal size
G08AEF Friedman two-way analysis of variance on k matched samples
G08AFF Kruskal-Wallis one-way analysis of variance on k samples of unequal size
G08BAF Mood's and David's tests on two samples of unequal size
G08CAF Kolmogorov-Smirnov one-sample distribution test
G08DAF Kendall's coefficient of concordance
X03AAF Real innerproduct added to initial value, basic/additional precision
X03ABF Complex innerproduct added to initial value, basic/additional precision
H01ABF Linear programming, simplex algorithm, one iteration
H01ADF Linear programming, revised simplex method
H01AFF Find feasible point or vertex satisfying linear constraints
H01BAF Linear programming, numerically stable form of simplex method
H02AAF Quadratic programming, Beale's method
H02BAF Integer linear programming, Gomory's method with Wilson's cuts
H03ABF Transportation problem
J06
J06AAF Pair of axes for the current data region, automatic annotation
J06ABF Pair of axes for the current data region, user-specifiable
annotation
J06ACF Grid for the current data region, automatic annotation
J06ADF Grid for the current data region, user-specifiable annotation
J06AEF Scaled border for the current data region, automatic annotation
J06AFF Scaled border for the current data region, user-specifiable
annotation
J06AGF Single axis under user control
J06AHF Plot title, centred at the top of the current data region
J06AJF Axis title, centred at the side or bottom of the current data
region
J06BAF Plot data points with optional straight lines and markers
J06CAF Plot single-valued curve through data points
J06CBF Plot single-valued curve through data points, called point-wise
J06CCF Plot possibly multi-valued curve through data points
J06CDF Plot possibly multi-valued curve through data points, called
point-wise
J06EAF Plot user-supplied function over specified range
J06EBF Plot user-supplied function over specified range, called
point-wise
J06FAF Plot cubic spline in an interval, from its B-spline
representation
J06GAF Contour map, (easy-to-use), data on regular rectangular grid
J06GBF Contour map, (comprehensive), data on regular rectangular grid
J06GCF Contour map, (easy-to-use), data on irregular rectangular grid
J06GDF Contour map, (comprehensive), data on irregular rectangular
grid
J06GEF Contour map, (easy-to-use), user-supplied function
J06GFF Contour map, (comprehensive), user-supplied function
J06GZF Key to contour plot
J06HAF Isometric surface view, data on regular rectangular grid,
easy-to-use
J06HBF Isometric surface view, data on regular rectangular grid,
comprehensive
J06AAF ROUTINE
J06AAF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06AAF// draws a pair of annotated axes to fit the
current data region.
B. Specification
================
SUBROUTINE //J06AAF//
C. Parameters
=============
None.
D. Error Indicators and Warnings
================================
None.
------
END OF J06AAF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06ABF ROUTINE
J06ABF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06ABF// draws a pair of annotated axes to fit the
current data region. The tick mark interval on each axis
may be specified by the user or calculated automatically.
B. Specification
================
SUBROUTINE //J06ABF// (DX, DY)
C //real// DX, DY
C. Parameters
=============
DX - //real//.
On entry, DX must specify the X axis tick mark interval
size in user co-ordinates.
Unchanged on exit.
DY - //real//.
On entry, DY must specify the Y axis tick mark interval
size in user co-ordinates.
Unchanged on exit.
D. Error Indicators and Warnings
================================
None.
------
END OF J06ABF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06ACF ROUTINE
J06ACF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06ACF// draws a grid (or graticule) to fit the current
data region.
B. Specification
================
SUBROUTINE //J06ACF//
C. Parameters
=============
None.
D. Error Indicators and Warnings
================================
None.
------
END OF J06ACF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06ADF ROUTINE
J06ADF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06ADF// draws a grid (or graticule) to fit the current
data region. The grid line interval for each axis may be
specified by the user or calculated automatically.
B. Specification
================
SUBROUTINE //J06ADF// (DX, DY)
C //real// DX, DY
C. Parameters
=============
DX - //real//.
On entry, DX must specify the X axis grid line interval
in user co-ordinates.
Unchanged on exit.
DY - //real//.
On entry, DY must specify the Y axis grid line interval
in user co-ordinates.
Unchanged on exit.
D. Error Indicators and Warnings
================================
None.
------
END OF J06ADF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06AEF ROUTINE
J06AEF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06AEF// draws a scaled border to fit the current data
region.
B. Specification
================
SUBROUTINE //J06AEF//
C. Parameters
=============
None.
D. Error Indicators and Warnings
================================
None.
------
END OF J06AEF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06AFF ROUTINE
J06AFF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06AFF// draws a scaled border to fit the current data
region. The tick mark intervals may be specified by the
user or calculated automatically.
B. Specification
================
SUBROUTINE //J06AFF// (DX, DY)
C //real// DX, DY
C. Parameters
=============
DX - //real//.
On entry, DX must specify the X axis tick mark interval
in user co-ordinates.
Unchanged on exit.
DY - //real//.
On entry, DY must specify the Y axis tick mark interval
in user co-ordinates.
Unchanged on exit.
D. Error Indicators and Warnings
================================
None.
------
END OF J06AFF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06AGF ROUTINE
J06AGF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06AGF// draws a single axis with user control over
range, annotation and positioning.
B. Specification
================
SUBROUTINE //J06AGF// (IAXIS, AMIN, AMAX,
1 MAXINT, DINT, ILABS, THRU, LABTM,
2 NFORM, NDIM)
C INTEGER IAXIS, MAXINT, ILABS,
C 1 LABTM(NDIM), NFORM, NDIM
C //real// AMIN, AMAX, DINT, THRU
C. Parameters
=============
IAXIS - INTEGER.
On entry, IAXIS must specify the axis to be drawn. If
IAXIS.LE.1, the X axis will be drawn. If IAXIS.GT.1, the
Y axis will be drawn.
Unchanged on exit.
AMIN - //real//.
AMAX - //real//.
On entry, AMIN and AMAX must specify the range of the
axis in user co-ordinates. If AMIN = AMAX the call is
ignored.
Unchanged on exit.
MAXINT - INTEGER.
On entry, MAXINT must specify the maximum number of tick
mark intervals required. If MAXINT.LT.1, then the
interval size DINT is used.
Unchanged on exit.
DINT - //real//.
On entry, DINT must specify the required interval size
(if MAXINT.LT.1). If DINT.LE.0.0 then an automatically
calculated interval size is used. If MAXINT.GE.1, DINT
is not referenced.
Unchanged on exit.
ILABS - INTEGER.
On entry, ILABS must specify the tick mark annotation
option required:-
-2 user-supplied labels centred between tick
marks
-1 user-supplied labels centred on tick marks
0 full automatic annotation
1 tick marks only
2 no annotation or tick marks
If, on entry, ILABS is out of range, then ILABS = 1 is
assumed.
Unchanged on exit.
THRU - //real//.
On entry, THRU must specify the point on the other axis
through which this axis will be drawn.
Unchanged on exit.
LABTM - INTEGER array of DIMENSION (NDIM).
Before entry, LABTM must contain the user-supplied tick
mark labels, for use if ILABS = -1 or -2. If ILABS.GE.0,
a dummy array of at least one element must be supplied,
but is not referenced.
Unchanged on exit.
NFORM - INTEGER.
On entry, NFORM must specify the format of the labels in
LABTM, if any. The labels will be assumed to be held in
Aw format, with w = NFORM.
1.LE.NFORM.LE.20.
If NFORM.GT.20, then NFORM = 20 is assumed. If
ILABS.LT.0 and NFORM.LT.1 then ILABS = 1 is assumed.
Unchanged on exit.
NDIM - INTEGER.
On entry, NDIM must specify the dimension of the array
LABTM.
NDIM.GE.1.
Unchanged on exit.
D. Error Indicators and Warnings
================================
None.
------
END OF J06AGF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06AHF ROUTINE
J06AHF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06AHF// draws a centred title of up to 80 characters
at the top of the data region.
B. Specification
================
SUBROUTINE //J06AHF// (ITITLE, NCHARS)
C INTEGER ITITLE(NCHARS), NCHARS
C. Parameters
=============
ITITLE - INTEGER array of DIMENSION (NCHARS).
Before entry, ITITLE must contain the title to be
output. The title must be stored with //nchar//
characters to each word. The value of //nchar// can be
found in the appropriate NAG Library implementation
document, in the section on Chapter M01. Note that
although only the first NCHARS/n (where n = //nchar//
elements of ITITLE are used, ITITLE must be declared to
be of length NCHARS.
Alternatively, a Hollerith string of length NCHARS may
be supplied.
The contents of ITITLE are unchanged on exit.
NCHARS - INTEGER.
On entry, NCHARS must specify the number of characters
in the title (which is equal to the dimension of the
array ITITLE, if used).
1.LE.NCHARS.LE.80.
Unchanged on exit.
D. Error Indicators and Warnings
================================
None.
------
END OF J06AHF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06AJF ROUTINE
J06AJF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06AJF// draws an axis title of up to 30 characters in
length.
B. Specification
================
SUBROUTINE //J06AJF// (IAXIS, ITITLE, NCHARS)
C INTEGER IAXIS, ITITLE(NCHARS), NCHARS
C. Parameters
=============
IAXIS - INTEGER.
On entry, IAXIS must specify the axis to be titled. If
IAXIS.LE.1, the X axis will be titled. If IAXIS.GT.1,
the Y axis will be titled.
Unchanged on exit.
ITITLE - INTEGER array of DIMENSION (NCHARS).
Before entry, ITITLE must contain the title to be
output. The title must be stored with //nchar//
characters to each word. The value of //nchar// can be
found in the appropriate NAG Library implementation
document, in the section on Chapter M01. Note that
although only the first NCHARS/n (where n = //nchar)//
elements of ITITLE are used, ITITLE must be declared to
be of length NCHARS.
Alternatively, a Hollerith string of length NCHARS may
be supplied.
The contents of ITITLE are unchanged on exit.
NCHARS - INTEGER.
On entry, NCHARS must specify the number of characters
in the title (which is equal to the dimension of the
array ITITLE, if used).
1.LE.NCHARS.LE.30.
Unchanged on exit.
D. Error Indicators and Warnings
================================
None.
------
END OF J06AJF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06BAF ROUTINE
J06BAF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06BAF// plots a series of data points, optionally
connecting the points with straight lines, and optionally
marking each point with a chosen symbol.
B. Specification
================
SUBROUTINE //J06BAF// (X, Y, N, ITYPE, KSYM,
1 IFAIL)
C INTEGER N, ITYPE, KSYM, IFAIL
C //real// X(N), Y(N)
C. Parameters
=============
X - //real// array of DIMENSION at least (N).
On entry, X(i) must contain x(i), the X co-ordinate of
the i(th) data point to be plotted.
Unchanged on exit.
Y - //real// array of DIMENSION at least (N).
On entry, Y(i) must contain y(i), the Y co-ordinate of
the i(th) data point to be plotted.
Unchanged on exit.
N - INTEGER.
On entry, N must specify the number of data points to be
plotted. N.GE.1.
Unchanged on exit.
ITYPE - INTEGER.
On entry, ITYPE must specify the option required -
0 - symbols only are plotted
1 - lines only
2 - both lines and symbols
-1 - as for ITYPE = 1, but in addition a line is drawn
from (X(N),Y(N)) to (X(1),Y(1)) to close the
polygon
-2 - as for ITYPE = 2, but again the polygon is closed.
If ITYPE is out of range, then the value 1 is assumed.
Unchanged on exit.
KSYM - INTEGER.
On entry, KSYM must specify the plotting symbol to be
used to mark the data points.
(1.LE.KSYM.LE.9).
The symbols available with each version of the NAG
Graphical Interface are reproduced in the Appendix to
the Essential Introduction to the Supplement Manual.
Unchanged on exit.
IFAIL - INTEGER.
Before entry, IFAIL must be assigned a value. For users
not familiar with this parameter (described in Chapter
P01 of the NAG FORTRAN Library Manual or the NAG On-line
Information Supplement) the recommended value is 0.
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
IFAIL = 1
N.LT.1. No data points.
------
END OF J06BAF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06CAF ROUTINE
J06CAF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06CAF// draws a smooth single-valued curve through a
set of data points.
B. Specification
================
SUBROUTINE //J06CAF// (AX, AY, N, METHOD,
1 IFAIL)
C INTEGER N, METHOD, IFAIL
C //real// AX(N), AY(N)
C. Parameters
=============
AX - //real// array of DIMENSION at least (N).
AY - //real// array of DIMENSION at least (N).
Before entry, AX(i), AY(i) must contain the X
co-ordinate and Y co-ordinate of the data point
(x(i),y(i)) for i = 1,2,...,n. The values
AX(1),AX(2),...,AX(N) must be either non-decreasing, or
non-increasing.
Unchanged on exit.
N - INTEGER.
On entry, N must specify the number of data points.
N.GE.2.
Unchanged on exit.
METHOD - INTEGER.
On entry, METHOD must specify the choice of method used
to estimate the slopes of the curve at data points.
METHOD = 1 - Piecewise monotonic method
METHOD = 2 - Cubic Bessel method
Generally speaking, METHOD = 1 gives a rather
tight-fitting curve, METHOD = 2 a somewhat looser curve
(see plots from example program). METHOD = 2 is
recommended as an initial try.
Unchanged on exit.
IFAIL - INTEGER.
For this routine, the normal use of IFAIL is extended to
control the printing of error messages as well as
specifying hard or soft failure (see Chapter P01 of the
NAG FORTRAN Library Manual or NAG On-line Information
Supplement).
Before entry, IFAIL must be set to a value with the
decimal expansion ba, where each of the decimal digits
b, a must have the value 0 or 1.
a = 0 specifies hard failure, otherwise soft failure.
b = 0 suppresses error messages, otherwise error
messages will be printed (see next section).
The recommended value for inexperienced users is 10
(i.e. hard failure with error messages printed).
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
For each error, the routine outputs an explanatory error
message on the current error message unit (see NAG
FORTRAN Library routine //X04AAF//), unless suppressed
by the value of IFAIL on entry.
IFAIL = 1
On entry, N.LT.2
or METHOD.NE.1 or 2.
IFAIL = 2
X co-ordinates of data points not monotonic.
AX(I), I = 1,2,...,N, must satisfy either
AX(1).LE.AX(2).LE.....LE.AX(N)
or
AX(1).GE.AX(2).GE.....GE.AX(N).
In both cases no curve is drawn.
------
END OF J06CAF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06CBF ROUTINE
J06CBF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06CBF// draws a smooth single-valued curve through a
set of data points, the routine being called once for
each point.
B. Specification
================
SUBROUTINE //J06CBF// (X, Y, IXCODE, G,
1 IGCODE, TOLX, STORE, IFAIL)
C INTEGER IXCODE, IGCODE, IFAIL
C //real// X, Y, G, TOLX, STORE(15)
C. Parameters
=============
X - //real//.
Y - //real//.
On entry, X,Y must contain the X and Y co-ordinates of
the next data point on the curve. The successive X
co-ordinates must be either non-decreasing or
non-increasing.
Unchanged on exit.
IXCODE - INTEGER.
On entry, IXCODE must specify the type of point (X,Y)
supplied and selects the method of drawing required, as
follows:-
IXCODE = 1
means that (X,Y) is the first point and that the
piecewise monotonic method is to be used.
IXCODE = 2
means that (X,Y) is the first point and that the cubic
Bessel method is to be used.
IXCODE = 0
means that (X,Y) is an intermediate point.
IXCODE = 9
means that (X,Y) is the last point.
Unchanged on exit.
G - //real//.
On entry, if IGCODE = 1, G must specify to the slope of
the curve at (X,Y) as supplied by the user.
Unchanged on exit.
IGCODE - INTEGER.
On entry, IGCODE must be set to 0 if the slope at (X,Y)
is to be estimated by the routine, and to 1 if supplied
by the user in G.
Unchanged on exit.
TOLX - //real//.
On entry, TOLX must be set to the smallest difference in
successive X co-ordinates to be regarded as significant.
Any point whose X co-ordinate differs by less than TOLX
from that of its predecessor will be ignored.
Unchanged on exit.
STORE - //real// array of DIMENSION at least (15).
Used as workspace. The contents of STORE must not be
altered between calls to the routine.
IFAIL - INTEGER.
For this routine, the normal use of IFAIL is extended to
control the printing of error messages as well as
specifying hard or soft failure (see Chapter P01 of the
NAG FORTRAN Library manual or NAG On-line Information
Supplement).
Before entry, IFAIL must be set to a value with the
decimal expansion ba, where each of the decimal digits
b, a must have the value 0 or 1.
a = 0 specifies hard failure, otherwise soft failure.
b = 0 suppresses error messages, otherwise error
messages will be printed (see next section).
The recommended value for inexperienced users is 10
(i.e. hard failure with error messages printed).
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
For each error, the routine outputs an explanatory error
message on the current error message unit (see NAG
FORTRAN Library routine //X04AAF//), unless suppressed
by the value of IFAIL on entry.
IFAIL = 1
Illegal value of IXCODE or IGCODE on entry, see
section C.
IFAIL = 2
X co-ordinates of data points not monotonic.
Successive X co-ordinates must be either
non-decreasing or non-increasing.
In these cases no curve section is drawn.
------
END OF J06CBF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06CCF ROUTINE
J06CCF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06CCF// draws a smooth, possibly multi-valued, curve
through a set of data points. The curve may be open or
closed.
B. Specification
================
SUBROUTINE //J06CCF// (AX, AY, N, METHOD,
1 IFAIL)
C INTEGER N, METHOD, IFAIL
C //real// AX(N), AY(N)
C. Parameters
=============
AX - //real// array of DIMENSION at least (N).
AY - //real// array of DIMENSION at least (N).
Before entry, AX(i),AY(i) must contain the X and Y
co-ordinates of the (i)th data point, (x(i),y(i)), for
i = 1,2,...,N.
Unchanged on exit.
N - INTEGER.
Before entry, N must specify the number of data points.
N.GE.2.
Unchanged on exit.
METHOD - INTEGER.
On entry, METHOD must specify the choice of curve
drawing method, and whether the curve is open or closed.
METHOD = 1 - Butland's method, open curve.
METHOD = 2 - McConalogue's method, open curve.
METHOD = -1 - Butland's method, closed curve.
METHOD = -2 - McConalogue's method, closed curve.
McConalogue's method is recommended in the first
instance - see the Graphical Supplement routine
document.
Unchanged on exit.
IFAIL - INTEGER.
For this routine, the normal use of IFAIL is extended to
control the printing of error messages as well as
specifying hard or soft failure (see Chapter P01 of the
NAG FORTRAN Library Manual or NAG On-line Information
Supplement).
Before entry, IFAIL must be set to a value with the
decimal expansion ba, where each of the decimal digits
b, a must have the value 0 or 1.
a = 0 specifies hard failure, otherwise soft failure.
b = 0 suppresses error messages, otherwise error
messages will be printed (see next section).
The recommended value for inexperienced users is 10
(i.e. hard failure with error messages printed).
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
For each error, the routine outputs an explanatory error
message on the current error message unit (see NAG
FORTRAN Library routine //X04AAF//), unless suppressed
by the value of IFAIL on entry.
IFAIL = 1
Error in input parameters: either N.LT.2 or METHOD not
equal to 1,2,-1 or -2.
In these cases no curve is drawn.
------
END OF J06CCF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06CDF ROUTINE
J06CDF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06CDF// draws a smooth, possibly multivalued, curve
through a set of data points, the routine being called
once for each point. The curve may be open or closed.
B. Specification
================
SUBROUTINE //J06CDF// (X, Y, IXCODE, GX, GY,
1 IGCODE, TOLX, TOLY, STORE, IFAIL)
C INTEGER IXCODE, IGCODE, IFAIL
C //real// X, Y, GX, GY, TOLX, TOLY, STORE(28)
C. Parameters
=============
X - //real//.
Y - //real//.
On entry, X, Y must contain the X and Y co-ordinates of
the next data point on the curve.
Unchanged on exit.
IXCODE - INTEGER.
On entry, IXCODE must specify the type of point (X,Y)
supplied and selects the method of drawing required, as
follows:-
IXCODE = 1
means that (X,Y) is the first point and that Butland's
method is to be used to draw an open curve.
IXCODE = -1
as IXCODE = 1 except that the curve is to be closed.
IXCODE = 2
means that (X,Y) is the first point and that
McConalogue's method is to be used to draw an open
curve.
IXCODE = -2
as IXCODE = 2 except that the curve is to be closed.
IXCODE = 0
means that (X,Y) is an intermediate point.
IXCODE = 9
means that (X,Y) is the last point.
Unchanged on exit.
GX - //real//.
GY - //real//.
On entry, if IGCODE = 1, GX, GY must contain information
about the slope of the curve at (X,Y).
The curve will be drawn so that its slope at (X,Y) is
GY/GX.
For McConalogue's method, only the ratio of GY to GX is
used; multiplying GY and GX by the same factor does not
alter the shape of the curve. In particular, users will
usually find it most convenient to set GX,GY to the
direction cosines of the curve at (X,Y).
For Butland's method, the individual values of GY and GX
affect the shape of the curve; GX and GY must specify
the derivatives dx(t)/dt and of the curve (x(t),y(t))
with respect to the parameter t. The parameter interval
between points is 1 (i.e. t has the value 0 at the first
point, 1 at the second point, and so on).
Unchanged on exit.
IGCODE - INTEGER.
On entry, IGCODE must be set to 0 if the slope at (X,Y)
is to be estimated by the routine, and to 1 if the slope
at (X,Y) is to be specified by the user in GX,GY.
Unchanged on exit.
TOLX - //real//.
TOLY - //real//.
On entry, TOLX,TOLY must be set to the smallest
differences in the X and Y co-ordinates of successive
points to be regarded as significant. Any point whose
co-ordinates differ by less than TOLX and TOLY from its
predecessor will be ignored.
Unchanged on exit.
STORE - //real// array of DIMENSION at least (28).
Used as workspace. The contents of STORE must not be
altered between calls of the routine.
IFAIL - INTEGER.
For this routine, the normal use of IFAIL is extended to
control the printing of error messages as well as
specifying hard or soft failure (see Chapter P01 of the
NAG FORTRAN Library Manual or NAG On-line Information
Supplement).
Before entry, IFAIL must be set to a value with the
decimal expansion ba, where each of the decimal digits
b, a must have the value 0 or 1.
a = 0 specifies hard failure, otherwise soft failure.
b = 0 suppresses error messages, otherwise error
messages will be printed (see next section).
The recommended value for inexperienced users is 10 (i.e.
hard failure with error messages printed).
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
For each error, the routine outputs an explanatory error
message on the current error message unit (see NAG
FORTRAN Library routine //X04AAF//), unless suppressed
by the value of IFAIL on entry.
IFAIL = 1
Illegal value of IXCODE or IGCODE on entry (see
Section C).
In this case no curve section is drawn.
------
END OF J06CDF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06EAF ROUTINE
J06EAF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06EAF// draws a user-supplied function over a
specified range.
B. Specification
================
SUBROUTINE //J06EAF// (FUNCT, X1, X2)
C //real// FUNCT, X1, X2
C EXTERNAL FUNCT
C. Parameters
=============
FUNCT - //real// FUNCTION, supplied by the user.
FUNCT is the function which is to be drawn.
Its specification is:-
//real// FUNCTION FUNCT(X)
C //real// X
X - //real//.
On entry, X specifies the point at which the
function is to be evaluated. X must not be changed
by FUNCT.
FUNCT must be declared as EXTERNAL in the (sub)program
from which //J06EAF// is called.
X1 - //real//.
X2 - //real//.
On entry, X1 and X2 must specify the endpoints of the
range over which the function is to be drawn. Either
parameter may have the greater value.
Unchanged on exit.
D. Error Indicators and Warnings
================================
None.
------
END OF J06EAF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06EBF ROUTINE
J06EBF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06EBF// draws a series of straight line segments
approximating to a series of data points, being called
once for each point (X,Y). The routine may be used to
draw a function where the user wishes to determine which
values of the function to compute.
B. Specification
================
SUBROUTINE //J06EBF// (X, Y, ICODE, STORE,
1 IFAIL)
C INTEGER ICODE, IFAIL
C //real// X, Y, STORE(9)
C. Parameters
=============
X - //real//.
On entry, X must specify the X co-ordinate of the next
data point. The series of values of X in successive
calls to //J06EBF// need not be monotonic.
Unchanged on exit.
Y - //real//.
On entry, Y must specify the Y co-ordinate of the next
data point.
Unchanged on exit.
ICODE - INTEGER.
On entry, ICODE must specify information about the point
(X,Y).
ICODE
1 first data point of a line
9 last data point of a line
0 any other data point
The user must ensure that the values of ICODE in
successive calls of //J06EBF// are in sequences in which
the first value is 1, the last is 9 and all others are
0.
Unchanged on exit.
STORE - //real// array of DIMENSION at least (9).
Used as workspace. The contents of STORE must not be
changed between calls to //J06EBF//.
IFAIL - INTEGER.
For this routine, the normal use of IFAIL is extended to
control the printing of error messages as well as
specifying hard or soft failure (see Chapter P01 of the
NAG FORTRAN Library Manual or the NAG On-line
Information Supplement).
Before entry, IFAIL must be set to a value with the
decimal expansion ba, where each of the decimal digits
b, a must have the value 0 or 1.
a = 0 specifies hard failure, otherwise soft failure.
b = 0 suppresses error messages, otherwise error
messages will be printed (see next section).
The recommended value for inexperienced users is 10
(i.e. hard failure with error messages printed).
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
For each error, the routine outputs an explanatory error
message on the current error message unit (see NAG
FORTRAN Library routine //X04AAF//), unless suppressed
by the value of IFAIL on entry.
IFAIL = 1
Illegal value of ICODE on entry - see Section C.
No curve section will be drawn.
------
END OF J06EBF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06FAF ROUTINE
J06FAF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06FAF// plots a cubic spline function in a given
interval from its B-spline representation. It is
typically used in conjunction with the NAG FORTRAN
Library routine //E02BAF//.
B. Specification
================
SUBROUTINE //J06FAF// (NCAP7, K, C, X1, X2,
1 KMARK, IFAIL)
C INTEGER NCAP7, KMARK, IFAIL
C //real// K(NCAP7), C(NCAP7), X1, X2
C. Parameters
=============
NCAP7 - INTEGER.
On entry, NCAP7 must specify NCAP + 7, where NCAP is the
number of intervals of the spline.
Unchanged on exit.
K - //real// array of DIMENSION at least (NCAP7).
Before entry, K(J) must be set to the value of the J(th)
member of the complete set of knots, for
J = 1,2,...,NCAP7. The K(J) must be in non-decreasing
order with K(NCAP+4) greater than K(4).
Unchanged on exit.
C - //real// array of DIMENSION at least (NCAP7).
Before entry, C(J) must be set to the value of the J(th)
B-spline coefficient, for J = 1,2,...,NCAP+3. The
remaining elements of the array are unused.
Unchanged on exit.
X1 - //real//.
X2 - //real//.
On entry, X1 must specify the lower bound and X2 the
upper bound of the interval in which the cubic spline is
to be plotted.
Unchanged on exit.
KMARK - INTEGER.
On entry, KMARK must specify the marker to be used to
indicate the knots.
0.LE.KMARK.LE.9. If KMARK = 0, no markers are drawn. The
symbols available with each version of the NAG Graphical
Interface are reproduced in the Appendix to the
Essential Introduction to the Supplement Manual.
Unchanged on exit.
IFAIL - INTEGER.
For this routine, the normal use of IFAIL is extended to
control the printing of error messages as well as
specifying hard or soft failure (see Chapter P01 of the
NAG FORTRAN Library Manual or the NAG On-line
Information Supplement).
Before entry, IFAIL must be set to a value with the
decimal expansion ba, where each of the decimal digits
b, a must have the value 0 or 1.
a = 0 specifies hard failure, otherwise soft failure.
b = 0 suppresses error messages, otherwise error
messages will be printed (see next section).
The recommended value for inexperienced users is 10
(i.e. hard failure with error messages printed).
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
For each error, the routine outputs an explanatory error
message on the current error message unit (see NAG
Library routine //X04AAF//), unless suppressed by the
value of IFAIL on entry.
IFAIL = 1
NCAP7.LT.8, i.e. the number of intervals not positive.
IFAIL = 2
Either K(4).GE.K(NCAP+4), i.e. the range over which
S(X) is defined is null or negative in length, or
`X1,X2! is an invalid interval, i.e. X1.GE.X2, or
X1.LT.K(4), or X2.GT.K(NCAP+4). See section 3 of the
Graphical Supplement routine document.
IFAIL = 3
The knots are not in non-decreasing order.
In these cases, no curve is drawn.
------
END OF J06FAF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06GAF ROUTINE
J06GAF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06GAF// draws a contour map of a surface defined by
M*N surface heights at the nodes of a regular,
rectangular mesh having equal spacing in X and equal
spacing in Y. The map is drawn to fill the current data
region.
B. Specification
================
SUBROUTINE //J06GAF// (SURFCE, M, N, NCHTS,
1 CHTS, ICH, UNUSED, IFAIL)
C INTEGER M, N, NCHTS, ICH, IFAIL
C LOGICAL UNUSED(M,N)
C //real// SURFCE(M,N), CHTS(NCHTS)
C. Parameters
=============
SURFCE - //real// array of DIMENSION (M,p), where p.GE.N.
Before entry, SURFCE should contain the surface heights
of the grid points arranged so that the first dimension
increases as X goes from XMIN to XMAX, and the second
dimension increases as Y goes from YMIN to YMAX, where
XMIN, XMAX, YMIN, YMAX are the limits of the user's
current data region.
Unchanged on exit.
M - INTEGER.
N - INTEGER.
On entry, M,N must specify the number of surface heights
in the X and Y directions respectively.
M.GE.3, N.GE.3.
Unchanged on exit.
NCHTS - INTEGER.
On entry, NCHTS must specify the number of contours to
be drawn. NCHTS.GE.1 unless ICH = 2, in which case NCHTS
.GE.2.
Unchanged on exit.
CHTS - //real// array of DIMENSION at least (NCHTS).
See ICH.
ICH - INTEGER.
On entry, ICH must specify the method used to determine
contour heights -
(i) ICH = 0 - The heights in SURFCE are scanned to
find the maximum and minimum. The range is divided
into NCHTS equal divisions, and a contour height
is defined at the mid-point of each division.
On exit, CHTS(I), I = 1,...,NCHTS contain the
calculated contour heights.
(ii) ICH = 1 - The contour heights are supplied by the
user. On entry, CHTS(I), I = 1,...,NCHTS should
contain the supplied heights; the values in CHTS
are unchanged on exit.
(iii) ICH = 2 - The range of contour heights is
specified by the user. On entry, CHTS(1) and
CHTS(2) should contain the extremes of the range.
A further (NCHTS-2) contours are defined equally
spaced within the range.
On exit, CHTS(I), I = 1,...,NCHTS contains the
calculated heights.
ICH is unchanged on exit.
UNUSED - LOGICAL array of DIMENSION (M,N).
Used as working space.
IFAIL - INTEGER.
Before entry, IFAIL must be assigned a value. For users
not familiar with this parameter (described in Chapter
P01 of the NAG FORTRAN Library Manual or the NAG On-line
Information Supplement) the recommended value is 0.
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
IFAIL = 1
On entry, M.LT.3
or N.LT.3
or NCHTS.LT.1
or ICH.LT.0
or ICH.GT.2
or ICH = 2 and NCHTS.LT.2.
------
END OF J06GAF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06GBF ROUTINE
J06GBF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06GBF// draws a contour map of a surface defined by
heights at the nodes of a regular, rectangular mesh. The
map is drawn to fill the current data region. A set of
options is available for annotation, highlighting,
straight line or curved contours, and choice of
contouring algorithms.
B. Specification
================
SUBROUTINE //J06GBF// (SURFCE, MDIM, MA, MB,
1 NA, NB, NCHTS, CHTS, ICH, CONDRA,
2 ILAB, IHIGH, LINDRA, IGRID, UNUSED,
3 IFAIL)
C INTEGER MDIM, MA, MB, NA, NB, NCHTS, ICH,
C 1 ILAB, IHIGH, IGRID, IFAIL
C LOGICAL UNUSED(MDIM,NB)
C //real// SURFCE(MDIM,NB), CHTS(NCHTS)
C EXTERNAL CONDRA, LINDRA
C. Parameters
=============
SURFCE - //real// array of DIMENSION (MDIM,p), where
p.GE.NB.
Before entry, the portion of the array SURFCE,
SURFCE(I,J), I = MA,...,MB, J = NA,...,NB, should
contain the surface heights to be contoured. These
should be arranged so that SURFCE(MA,NA) contains the
height at the bottom left-hand corner of the data region
(XMIN,YMIN), and so that the first dimension of SURFCE
increases as X goes from XMIN to XMAX, and the second
dimension increases as Y goes from YMIN to YMAX, where
(XMIN,XMAX,YMIN,YMAX)
are the limits of the current data region.
Unchanged on exit.
MDIM - INTEGER.
On entry, MDIM must specify the first dimension of the
array SURFCE, as declared in the calling (sub)program.
MDIM.GE.3.
Unchanged on exit.
MA - INTEGER.
MB - INTEGER.
NA - INTEGER.
NB - INTEGER.
On entry, MA, MB, NA, NB must specify the portion of the
array SURFCE to be contoured, namely
SURFCE(I,J),
I = MA,...,MB, J = NA,...,NB.
1.LE.MA.LE.MB - 2.
MB.LE.MDIM.
1.LE.NA.LE.NB - 2.
Unchanged on exit.
NCHTS - INTEGER.
On entry, NCHTS must specify the number of contours to
be drawn. NCHTS.GE.1 unless ICH = 2, in which case NCHTS
.GE.2.
Unchanged on exit.
CHTS - //real// array of DIMENSION at least (NCHTS).
See ICH.
ICH - INTEGER.
On entry, ICH must specify the method used to determine
contour heights -
(i) ICH = 0 - The heights in SURFCE are scanned to
find the maximum and minimum. The range is divided
into NCHTS equal divisions, and a contour height
is defined at the mid-point of each division.
On exit, CHTS(I), I = 1,...,NCHTS contain the
calculated contour heights.
(ii) ICH = 1 - The contour heights are supplied by the
user. On entry, CHTS(I), I = 1,...,NCHTS should
contain the supplied heights; the values in CHTS
are unchanged on exit.
(iii) ICH = 2 - The range of contour heights is
specified by the user. On entry, CHTS(1) and
CHTS(2) should contain the extremes of the range.
A further (NCHTS-2) contours are defined equally
spaced within the range.
On exit, CHTS(I), I = 1,...,NCHTS contains the
calculated heights.
Unchanged on exit.
CONDRA - SUBROUTINE, supplied by the NAG Graphical
Supplement.
This parameter enables the user to select the contouring
method. Two routines are provided -
(i) J06GBZ - Inverse linear interpolation is used to
calculate the intersections of the contour lines
with the mesh.
(ii) J06GBY - The surface height at the centre of each
rectangle is approximated by the average of the
heights at the corners, effectively producing a
triangular mesh. Inverse linear interpolation is
again used to calculate where the contours cut the
mesh lines and diagonals.
Method (i) is faster but within certain rectangles there
may be ambiguity as to which way the contour line should
turn. This is resolved by adopting the convention of
"high ground on the right". Method (ii) requires
greater computation time, but the triangular mesh
resolves any ambiguity.
J06GBZ or J06GBY must be declared as EXTERNAL in the
(sub)program from which //J06GBF// is called.
**N.B.** In implementations where both single and double
precision versions of the Graphical Supplement are
available, these routines are called GBZJ06 and GBVJ06
in the alternative precision version, see local
documentation.
ILAB - INTEGER.
On entry, ILAB must specify the frequency of contour
heights that are labelled. If ILAB = 0, no contours are
labelled. Otherwise contours of height CHTS(1) and every
subsequent ILAB(th) height are labelled. A contour of
height CHTS(I) is labelled with the index I, rather than
the actual height CHTS(I). The subroutine //J06GZF// can
be used to draw a reference table of the index I and the
associated contour height. The size of the contour
annotation is set within //J06GBF//, but may be scaled
by the user through a call to the NAG Graphical
Interface routine //J06XGF// (see the Essential
Introduction to the Supplement Manual). In particular,
users should note that the shape of characters will be
distorted if the contour map is very non-square and in
this situation a call to //J06XGF// will usually improve
the appearance of the annotation considerably. The size
of the labelling also affects the frequency of the
labelling along any one contour line. Contours are not
labelled if the subroutine estimates that there is
insufficient room.
ILAB.GE.0.
Unchanged on exit.
IHIGH - INTEGER.
On entry, IHIGH must specify the frequency of contour
heights to be highlighted. If IHIGH = 0, no contours are
highlighted. Otherwise contours of height CHTS(1) and
every subsequent IHIGH(th) height are highlighted. For
highlighting, //J06GBF// selects pen number 2 to draw
any contour to be highlighted, and pen number 1
otherwise. The selection of a pen involves the setting
of a particular colour, linetype and text font within
//J06GBF// - for full details on highlighting see the
Essential Introduction to the NAG Supplement Manual. The
default settings of the pens ensure that pen numbers 1
and 2 can be distinguished on most graphical output
devices; the user can "program" the pen appearances via
the NAG Graphical Interface routine //J06XDF//. If
highlighting is selected, pen number 1 is in force on
exit from //J06GBF//. Note however that if IHIGH = 0 no
pen selection is made within //J06GBF//; thus settings
of colour, linetype and text font are as on entry to
//J06GBF//.
IHIGH.GE.0.
Unchanged on exit.
LINDRA - SUBROUTINE, supplied by the NAG Graphical
Supplement.
This parameter specifies whether successive points on a
contour are to be joined by
(i) J06GBU - straight lines
(ii) J06GBV - a smooth curve using Butland's method
(iii) J06GBW - a smooth curve using McConalogue's method
The fastest option is J06GBU, but some users may prefer
the smoother contours generated by J06GBV or J06GBW
(bearing in mind that the curve drawn between points
will necessarily reflect the properties of the curve
drawing method rather than the surface to be contoured).
A tighter fitting curve will be generated by J06GBV than
J06GBW, and so crossing contours are less likely. Note
however that J06GBW is a rotation-independent curve
drawing method, unlike J06GBV. For full details see
routine document //J06CCF// or //J06CDF//.
J06GBU or J06GBV or J06GBW must be declared as EXTERNAL
in the (sub)program from which //J06GBF// is called.
**N.B.** In implementations where both single and double
precision versions of the Graphical Supplement are
available, these routines are called GBUJ06, GBVJ06 and
GBWJ06 in the alternative precision version, see local
documentation.
IGRID - INTEGER.
On entry, IGRID must specify the type of border or grid
to be drawn. If IGRID = 0 no border or grid is drawn. If
IGRID = 1 a border only is drawn; if IGRID = 2 the mesh
lines are drawn.
Unchanged on exit.
UNUSED - LOGICAL array of DIMENSION (MDIM,q), where
q.GE.NB.
Used as working space.
IFAIL - INTEGER.
Before entry, IFAIL must be assigned a value. For users
not familiar with this parameter (described in Chapter
P01 of the NAG FORTRAN Library Manual or the NAG On-line
Information Supplement) the recommended value is 0.
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
IFAIL = 1
On entry, ICH.LT.0
or ICH.GT.2
or ILAB.LT.0
or IHIGH.LT.0
or IGRID.LT.0
or IGRID.GT.2
or ICH = 2 and NCHTS.LT.2.
IFAIL = 2
On entry, MDIM.LT.MB
or MA.LT.1
or MB - MA.LT.2
or NA.LT.1
or NB - NA.LT.2
or NCHTS.LT.1.
------
END OF J06GBF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06GCF ROUTINE
J06GCF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06GCF// draws a contour map of a surface defined by
M.MU.N surface heights at the nodes of an irregular,
rectangular mesh having unequal spacing in X and unequal
spacing in Y.
B. Specification
================
SUBROUTINE //J06GCF// (SURFCE, XPTS, YPTS, M,
1 N, NCHTS, CHTS, ICH, UNUSED, IFAIL)
C INTEGER M, N, NCHTS, ICH, IFAIL
C LOGICAL UNUSED(M,N)
C //real// SURFCE(M,N), XPTS(M), YPTS(N),
C 1 CHTS(NCHTS)
C. Parameters
=============
SURFCE - //real// array of DIMENSION (M,p), where p.GE.N.
Before entry, SURFCE should contain the surface heights
of the grid points arranged so that the first dimension
increases as X goes from XPTS(1) to XPTS(M), and the
second dimension increases as Y goes from YPTS(1) to
YPTS(N).
Unchanged on exit.
XPTS - //real// array of DIMENSION at least (M).
Before entry, XPTS(I), I = 1,...,M, must contain the X
co-ordinates of the vertical mesh lines.
Unchanged on exit.
YPTS - //real// array of DIMENSION at least (N).
Before entry, YPTS(J), J = 1,...,N, must contain the Y
co-ordinates of the horizontal mesh lines.
Unchanged on exit.
M - INTEGER.
N - INTEGER.
On entry, M, N must specify the number of surface
heights in the X and Y directions respectively.
M.GE.3. N.GE.3.
Unchanged on exit.
NCHTS - INTEGER.
On entry, NCHTS must specify the number of contours to
be drawn. NCHTS.GE.1 unless ICH = 2, in which case NCHTS
.GE.2.
Unchanged on exit.
CHTS - //real// array of DIMENSION at least (NCHTS).
See ICH.
ICH - INTEGER.
On entry, ICH must specify the method used to determine
contour heights -
(i) ICH = 0 - The heights in SURFCE are scanned to
find the maximum and minimum. The range is divided
into NCHTS equal divisions, and a contour height
is defined at the mid-point of each division.
On exit, CHTS(I), I = 1,...,NCHTS contain the
calculated contour heights.
(ii) ICH = 1 - The contour heights are supplied by the
user. On entry, CHTS(I), I = 1,...,NCHTS must
contain the supplied heights; the values in CHTS
are unchanged on exit.
(iii) ICH = 2 - The range of contour heights is
specified by the user. On entry, CHTS(1) and
CHTS(2) must contain the extremes of the range. A
further (NCHTS-2) contours are defined equally
spaced within the range.
On exit, CHTS(I), I = 1,...,NCHTS contains the
calculated heights.
Unchanged on exit.
UNUSED - LOGICAL array of DIMENSION
(M,q), where q.GE.N.
Used as working space.
IFAIL - INTEGER.
Before entry, IFAIL must be assigned a value. For users
not familiar with this parameter (described in Chapter
P01 of the NAG FORTRAN Library Manual or the NAG On-line
Information Supplement) the recommended value is 0.
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
IFAIL = 1
On entry, M.LT.3
or N.LT.3
or NCHTS.LT.1
or ICH.LT.0
or ICH.GT.2
or ICH = 2 and NCHTS.LT.2.
------
END OF J06GCF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06GDF ROUTINE
J06GDF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06GDF// draws a contour map of a surface defined by
heights at the nodes of an irregular, rectangular mesh. A
set of options is available for annotation, highlighting,
straight line or curved contours, and choice of
contouring algorithms.
B. Specification
================
SUBROUTINE //J06GDF// (SURFCE, XPTS, YPTS,
1 MDIM, MA, MB, NA, NB, NCHTS, CHTS,
2 ICH, CONDRA, ILAB, IHIGH, LINDRA,
3 IGRID, UNUSED, IFAIL)
C INTEGER MDIM, MA, MB, NA, NB, NCHTS, ICH,
C 1 ILAB, IHIGH, IGRID, IFAIL
C LOGICAL UNUSED(MDIM,NB)
C //real// SURFCE(MDIM,NB), XPTS(MB), YPTS(NB),
C 1 CHTS(NCHTS)
C EXTERNAL CONDRA, LINDRA
C. Parameters
=============
SURFCE - //real// array of DIMENSION
(MDIM,p), where p.GE.NB.
Before entry, the portion of the array SURFCE,
SURFCE(I,J), I = MA,...,MB, J = NA,...,NB, should
contain the surface heights to be contoured. These
should be arranged so that SURFCE(MA,NA) contains the
height at the bottom left-hand corner of the mesh
(XPTS(MA),YPTS(NA)), and so that the first dimension of
SURFCE increases as X goes from XPTS(MA) to XPTS(MB),
and the second dimension increases as Y goes from
YPTS(NA) to YPTS(NB).
Unchanged on exit.
XPTS - //real// array of DIMENSION at least (MB).
Before entry, XPTS(I), I = MA,...,MB, must contain the X
co-ordinates of the vertical mesh lines.
Unchanged on exit.
YPTS - //real// array of DIMENSION at least (NB).
Before entry, YPTS(I), I = NA,...,NB, must contain the Y
co-ordinates of the horizontal mesh lines.
Unchanged on exit.
MDIM - INTEGER.
On entry, MDIM must specify the first dimension of the
array SURFCE, as declared in the calling (sub)program.
MDIM.GE.3.
Unchanged on exit.
MA - INTEGER.
MB - INTEGER.
NA - INTEGER.
NB - INTEGER.
On entry, MA, MB, NA, NB must specify the portion of the
array SURFCE to be contoured, namely
SURFCE(I,J),
I = MA,...,MB, J = NA,...,NB.
1.LE.MA.LE.MB - 2.
MB.LE.MDIM.
1.LE.NA.LE.NB - 2.
Unchanged on exit.
NCHTS - INTEGER.
On entry, NCHTS must specify the number of contours to
be drawn. NCHTS.GE.1 unless ICH = 2, in which case NCHTS
.GE.2.
Unchanged on exit.
CHTS - //real// array of DIMENSION at least (NCHTS).
See ICH.
ICH - INTEGER.
On entry, ICH must specify the method used to determine
contour heights -
(i) ICH = 0 - The heights in SURFCE are scanned to
find the maximum and minimum. The range is divided
into NCHTS equal divisions, and a contour height
is defined at the mid-point of each division.
On exit, CHTS(I), I = 1,...,NCHTS contain the
calculated contour heights.
(ii) ICH = 1 - The contour heights are supplied by the
user. On entry, CHTS(I), I = 1,...,NCHTS should
contain the supplied heights; the values in CHTS
are unchanged on exit.
(iii) ICH = 2 - The range of contour heights is
specified by the user. On entry, CHTS(1) and
CHTS(2) should contain the extremes of the range.
A further NCHTS - 2 contours are defined equally
spaced within the range.
On exit, CHTS(I), I = 1,...,NCHTS contains the
calculated heights.
Unchanged on exit.
CONDRA - SUBROUTINE, supplied by the
NAG Graphical Supplement.
This parameter enables the user to select the contouring
method. Two routines are provided -
(i) J06GBZ - Inverse linear interpolation is used to
calculate the intersections of the contour lines
with the mesh.
(ii) J06GBY - The surface height at the centre of each
rectangle is approximated by the average of the
height at the corners, effectively producing a
triangular mesh. Inverse linear interpolation is
again used to calculate where the contours cut the
mesh lines and diagonals.
Method (i) is faster but within certain rectangles there
may be ambiguity as to which way the contour line should
turn. This is resolved by adopting the convention of
"high ground on the right". Method (ii) requires
greater computation time, but the triangular mesh
resolves any ambiguity.
J06GBZ or J06GBY must be declared as EXTERNAL in the
(sub)program from which //J06GDF// is called.
**N.B.** In implementations where both double and single
precision versions of the Graphical Supplement are
available, these routines are called GBZJ06 and GBYJ06
in the alternative precision version, see local
documentation.
ILAB - INTEGER.
On entry, ILAB must specify the frequency of contour
heights that are labelled. If ILAB = 0, no contours are
labelled. Otherwise contours of height CHTS(1) and every
subsequent ILAB(th) height are labelled. A contour of
height CHTS(I) is labelled with the index I, rather than
the actual height CHTS(I). The subroutine //J06GZF// can
be used to draw a reference table of the index I and the
associated contour height. The size of the contour
annotation is set within //J06GDF//, but may be scaled
by the user through a call to the NAG Graphical
Interface routine //J06XGF// (see the Essential
Introduction to the Supplement Manual). In particular,
users should note that the shape of characters will be
distorted if the contour map is very non-square and in
this situation a call of //J06XGF// will usually improve
the appearance of the annotation considerably. The size
of the labelling also affects the frequency of the
labelling along any one contour line. Contours are not
labelled if the subroutine estimates that there is
insufficient room.
Unchanged on exit.
IHIGH - INTEGER.
On entry, IHIGH must specify the frequency of contour
heights to be highlighted. If IHIGH = 0, no contours are
highlighted. Otherwise contours of height CHTS(1) and
every subsequent IHIGH(th) height are highlighted. For
highlighting, //J06GDF// selects pen number 2 to draw
any contour to be highlighted, and pen number 1
otherwise. The selection of a pen involves the setting
of a particular colour, linetype and text font within
//J06GDF// - for full details on highlighting see the
Essential Introduction to the Supplement Manual. The
default setting of the pens ensure that pen numbers 1
and 2 can be distinguished on most graphical output
devices; the user can "program" the pen appearances via
the NAG Graphical Interface routine //J06XDF//. If
highlighting is selected, pen number 1 is in force on
exit from //J06GDF//. Note however, that if IHIGH = 0
no pen selection whatsoever is made within //J06GDF//;
thus settings of colour, linetype and text font are as
on entry to //J06GDF//. IHIGH.GE.0.
Unchanged on exit.
LINDRA - SUBROUTINE, supplied by the
NAG Graphical Supplement.
This parameter enables the user to specify whether
successive points on a contour are to be joined by
(i) J06GBU - straight lines
(ii) J06GBV - a smooth curve using Butland's method
(iii) J06GBW - a smooth curve using McConalogue's method
The fastest option is J06GBU, but some users may prefer
the smoother contours generated by J06GBV or J06GBW
(bearing in mind that the curve drawn between points
will necessarily reflect the properties of the curve
drawing method rather than the surface to be contoured).
A tighter fitting curve will be generated by J06GBV than
J06GBW, and so crossing contours are less likely. Note
however, that J06GBW is a rotation-independent curve
drawing method, unlike J06GBV. For full details see
routine document //J06CCF// or //J06CDF//.
J06GBU, J06GBV or J06GBW must be declared as EXTERNAL in
the (sub)program from which //J06GDF// is called.
**N.B.** Implementations where both single and double
precisions of the Graphical Supplement are available,
these routines are called GBUJ06, GBVJ06 and GBWJ06 in
the alternative precision version, see local
documentation.
IGRID - INTEGER.
On entry, IGRID must specify the type of border or grid
to be drawn. If IGRID = 0 no border or grid is drawn. If
IGRID = 1 a border only is drawn; if IGRID = 2 the mesh
lines are drawn.
Unchanged on exit.
UNUSED - LOGICAL array of DIMENSION
(MDIM,q), where q.GE.NB.
Used as working space.
IFAIL - INTEGER.
Before entry, IFAIL must be assigned a value. For users
not familiar with this parameter (described in Chapter
P01 of the NAG FORTRAN Library Manual or the NAG On-line
Information Supplement) the recommended value is 0.
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
IFAIL = 1
On entry, ICH.LT.0
or ICH.GT.2
or ILAB.LT.0
or IHIGH.LT.0
or IGRID.LT.0
or IGRID.GT.2
or ICH = 2 and NCHTS.LT.2.
IFAIL = 2
On entry, MDIM.LT.MB
or MA.LT.1
or MB - MA.LT.2
or NA.LT.1
or NB - NA.LT.2
or NCHTS.LT.1.
------
END OF J06GDF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06GEF ROUTINE
J06GEF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06GEF// draws a contour map of a user-supplied
function of two variables.
B. Specification
================
SUBROUTINE //J06GEF// (HEIGHT, NV, NH, NCHTS,
1 CHTS, ICH, IFAIL)
C INTEGER NV, NH, NCHTS, ICH, IFAIL
C //real// CHTS(NCHTS)
C EXTERNAL HEIGHT
C. Parameters
=============
HEIGHT - SUBROUTINE, supplied by the user.
HEIGHT must calculate the surface height at a point
(X,Y), and store it in Z.
The specification is:-
SUBROUTINE HEIGHT(X,Y,Z)
//real// X,Y,Z
X - //real//.
Y - //real//.
On entry, X,Y contain the X and Y co-ordinates of
the point whose height is to be calculated. The
values of X and Y must not be changed in HEIGHT.
Z - //real//.
On exit, Z must contain the calculated surface
height at (X,Y).
Note that the contour is traced just outside the data
region (before being clipped to the edge) and so HEIGHT
must be able to accept values of X,Y which lie outside
the data region.
HEIGHT must be declared as EXTERNAL in the calling
(sub)program.
NV - INTEGER.
NH - INTEGER.
On entry, NV and NH must specify the number of
equispaced vertical and horizontal mesh lines covering
the data region that are used to detect the existence of
a contour line.
NV.GE.2. NH.GE.2. NV*NH.LE.150.
Unchanged on exit.
Note: NV and NH should be sufficiently large to form a
mesh fine enough to detect all required contours. If the
restriction NV*NH.LE.150 is too severe, use //J06GFF//.
NCHTS - INTEGER.
On entry, NCHTS must specify the number of contours to
be drawn.
Unchanged on exit.
CHTS - //real// array of DIMENSION at least (NCHTS).
See ICH.
ICH - INTEGER.
On entry, ICH must specify the method used to determine
contour heights:
(i) ICH = 0 - The heights at the nodes of the tracking
mesh are scanned to find the maximum and minimum.
The range is divided into NCHTS equal divisions,
and a contour height is defined at the mid-point
of each division.
On exit, CHTS(I), I = 1,...,NCHTS contain the
calculated contour heights.
(ii) ICH = 1 - The contour heights are supplied by the
user. On entry, CHTS(I), I = 1,...,NCHTS should
contain the supplied heights; the values in CHTS
are unchanged on exit.
(iii) ICH = 2 - The range of contour heights is
specified by the user. On entry, CHTS(1) and
CHTS(2) should contain the extremes of the range.
A further (NCHTS-2) contours are defined equally
spaced within the range.
On exit, CHTS(I), I = 1,...,NCHTS contains the
calculated heights.
ICH is unchanged on exit.
IFAIL - INTEGER.
Before entry, IFAIL must be assigned a value. For users
not familiar with this parameter (described in Chapter
P01 of the NAG FORTRAN Library Manual or the NAG On-line
Information Supplement) the recommended value is 0.
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
IFAIL = 1
On entry, ICH.LT.0
or ICH.GT.2
or ICH = 2 and NCHTS.LT.2
or NCHTS.LT.1.
IFAIL = 2
On entry, NV.LT.2
or NH.LT.2
or NV*NH.GT.150.
IFAIL = 3
The tracking step length has been halved five times
without being able to detect the next point on the
contour - indicating very sharp curvature. Possible
remedies are to alter slightly the value of the
contour height at which this occurs, make the tracking
mesh finer, or use //J06GFF// where the size of the
tracking step can be specified by the user.
------
END OF J06GEF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06GFF ROUTINE
J06GFF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06GFF// draws a contour map of a user-supplied
function of two variables. A set of options is available
for annotation, highlighting and control of step-size.
B. Specification
================
SUBROUTINE //J06GFF// (HEIGHT, NV, NH, D,
1 NCHTS, CHTS, ICH, ILAB, IHIGH, IGRID,
2 LWS, NLWS, WS, NWS, IFAIL)
C INTEGER NV, NH, NCHTS, ICH, ILAB, IHIGH,
C 1 IGRID, NLWS, NWS, IFAIL
C LOGICAL LWS(NLWS)
C //real// D, CHTS(NCHTS), WS(NWS)
C EXTERNAL HEIGHT
C. Parameters
=============
HEIGHT - SUBROUTINE, supplied by the user.
HEIGHT must calculate the surface height at a point
(X,Y) and store it in Z.
The specification is:
SUBROUTINE HEIGHT(X,Y,Z)
//real// X,Y,Z
X - //real//.
Y - //real//.
On entry, X,Y contain the X and Y co-ordinates of
the point whose height is to be calculated. The
values of X and Y must not be changed in HEIGHT.
Z - //real//.
On exit, Z must contain the calculated surface
height at (X,Y).
Note that the contour is traced just outside the data
region (before being clipped to the edge) and so HEIGHT
must be able to accept values of X,Y which lie slightly
outside the data region.
HEIGHT must be declared as EXTERNAL in the calling
(sub)program.
NV - INTEGER.
NH - INTEGER.
On entry, NV and NH must specify the number of
equispaced vertical and horizontal mesh lines covering
the data region that are used to detect the existence of
a contour line. NV and NH should be sufficiently large
to form a mesh fine enough to detect all required
contours.
NV.GE.2. NH.GE.2.
Unchanged on exit.
D - //real//.
On entry, D must specify the basic step-size expressed
as a fraction of the interval between successive
tracking mesh lines i.e. the basic step-size is the
vector D*(HV,HH) where HV and HH are the separations of
the vertical and horizontal lines of the tracking mesh.
D must not exceed 0.5 - a suitable value to try
initially is 0.1, the value used in //J06GEF//. The
smaller the value of D, the smoother the contours, but
the execution time is increased.
Unchanged on exit.
NCHTS - INTEGER.
On entry, NCHTS must specify the number of contours to
be drawn.
Unchanged on exit.
CHTS - //real// array of DIMENSION at least (NCHTS).
See ICH.
ICH - INTEGER.
On entry, ICH must specify the method used to determine
contour heights:
(i) ICH = 0 - The heights at the nodes of the tracking
mesh are scanned to find the maximum and minimum.
The range is divided into NCHTS equal divisions
and a contour height is defined at the midpoint of
each division.
On exit, CHTS(I), I = 1,...,NCHTS contain the
calculated contour heights.
(ii) ICH = 1 - The contour heights are supplied by the
user. On entry, CHTS(I), I = 1,...,NCHTS should
contain the supplied heights; the values in CHTS
are unchanged on exit.
(iii) ICH = 2 - The range of contour heights is
specified by the user. On entry, CHTS(1) and
CHTS(2) should contain the extremes of the range.
A further NCHTS - 2 contours are defined equally
spaced within the range.
On exit, CHTS(I), I = 1,...,NCHTS contains the
calculated heights.
ICH is unchanged on exit.
ILAB - INTEGER.
On entry, ILAB must specify the frequency with which
contour heights are to be labelled. If ILAB = 0, no
contours are labelled. Otherwise, contours of height
CHTS(1) and every subsequent ILAB(th) height are
labelled. A contour of height CHTS(I) is labelled with
the index I, rather than the actual height CHTS(I). The
subroutine //J06GZF// can be used to draw a reference
table of the index I and the associated contour height.
The size of the contour annotation is set within
//J06GFF//, but may be scaled by the user through a
call to the NAG Graphical Interface routine //J06XGF//
(see the Essential Introduction to the NAG Supplement
Manual). In particular users should note that the shape
of characters will be distorted if the contour map is
very non-square and in this situation a call to
//J06XGF// will usually improve the appearance of the
annotation considerably. The size of the labelling also
affects the frequency of the labelling along any one
contour line. Contours are not labelled if the
subroutine estimates that there is insufficient room.
Unchanged on exit.
IHIGH - INTEGER.
On entry, IHIGH must specify the frequency with which
contour heights are to be highlighted. If IHIGH = 0, no
contours are highlighted. Otherwise contours of height
CHTS(1) and every subsequent IHIGH(th) height are
highlighted. For highlighting, //J06GFF// selects pen
number 2 to draw any contour to be highlighted, and pen
number 1 otherwise. The selection of a pen involves the
setting of a particular colour, linetype and text font
within //J06GFF// - for full details on highlighting see
the Essential Introduction to the NAG Supplement Manual.
The default settings of the pens ensure that pen numbers
1 and 2 can be distinguished on most graphical output
devices; the user can @L0program@L1 the pen appearance
via the NAG Graphical Interface routine //J06XDF//. If
highlighting is selected, pen number 1 is in force on
exit from //J06GFF//. Note however that if IHIGH = 0 no
pen selection whatsoever is made within //J06GFF//;
thus settings of colour, linetype and text font are as
on entry to //J06GFF//.
Unchanged on exit.
IGRID - INTEGER.
On entry, IGRID must specify the type of border or grid
to be drawn. If IGRID = 0 no border or grid is drawn. If
IGRID = 1 a border only is drawn; if IGRID = 2 the lines
of the tracking mesh are drawn.
Unchanged on exit.
LWS - LOGICAL array of DIMENSION at least (NLWS).
Used as working space.
NLWS - INTEGER.
On entry, NLWS must specify the dimension of the array
LWS. NLWS.GE.3*NV*NH.
Unchanged on exit.
WS - //real// array of DIMENSION at least (NWS).
Used as working space.
NWS - INTEGER.
On entry, NWS must specify the dimension of the array
WS. NWS.GE.NV*NH.
Unchanged on exit.
IFAIL - INTEGER.
Before entry, IFAIL must be assigned a value. For users
not familiar with this parameter (described in Chapter
P01 of the NAG FORTRAN Library Manual or the NAG On-line
Information Supplement) the recommended value is 0.
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by the routine:-
IFAIL = 1
On entry, ICH.LT.0,
or ICH.GT.2,
or ILAB.LT.0,
or IHIGH.LT.0,
or IGRID.LT.0,
or IGRID.GT.2,
or D.LE.0.0,
or D.GT.0.5,
or ICH = 2 and NCHTS.LT.2.
IFAIL = 2
On entry, NV.LT.2,
or NH.LT.2,
or NCHTS.LT.1.
IFAIL = 3
On entry, NLWS.LT.3*NV*NH,
or NWS.LT.NV*NH.
IFAIL = 4
The routine has halved the tracking step length five
times but has failed to locate the next point on the
contour. This would indicate a very sharp curvature on
the contour. It may be possible to overcome this by
using a different value of D, the tracking step size
factor, or by slightly changing the value of the
contour height at which the problem occurs.
Intuitively a smaller value of D should be tried, but
occasionally a larger value overcomes the difficulty.
Also it is sometimes the case that changing the values
of NV and NH may overcome the difficulty as this can
change the starting point of closed contours.
------
END OF J06GFF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06GZF ROUTINE
J06GZF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06GZF// draws a table of contour heights.
B. Specification
================
SUBROUTINE //J06GZF// (CHTS, NCHTS, IFORM,
1 NWIDTH, NDP)
C INTEGER NCHTS, IFORM, NWIDTH, NDP
C //real// CHTS(NCHTS)
C. Parameters
=============
CHTS - //real// array of DIMENSION at least (NCHTS).
Before entry, CHTS(I), I = 1,...,NCHTS must contain the
contour heights to be included in the table.
Unchanged on exit.
NCHTS - INTEGER.
On entry, NCHTS must specify the number of contour
heights to be listed. NCHTS.GE.1.
Unchanged on exit.
IFORM - INTEGER.
On entry, IFORM must specify the output format for the
contour heights
IFORM = 1 - FORTRAN floating point
format
IFORM = 2 - FORTRAN fixed point
format
If IFORM.NE.1 or 2, the contour heights will not be
drawn, although the frame of the table and the contour
indices will be drawn.
Unchanged on exit.
NWIDTH - INTEGER.
NDP - INTEGER.
On entry, NWIDTH and NDP must specify the output format
details for the contour heights. If IFORM = 1, the
heights are output in FORTRAN floating point format with
NDP decimal places, in a field of width NWIDTH
characters. If IFORM = 2, the heights are output in
FORTRAN fixed point format with NDP decimal places, in a
field of width NWIDTH characters.
For floating point format, 1.LE.NWIDTH.LE.20,
NWIDTH.GE.NDP + 7, NDP.GT.0.
For fixed point format, 1.LE.NWIDTH.LE.20,
NWIDTH.GT.NDP + 1, NDP.GE.0.
If these restrictions are violated, no contour heights
may be printed, or NWIDTH asterisks may be produced.
Unchanged on exit.
D. Error Indicators and Warnings
================================
None.
------
END OF J06GZF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06HAF ROUTINE
J06HAF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06HAF// draws an isometric projection of a
single-valued three-dimensional surface Z(X,Y) defined at
points on a regular rectangular grid.
WARNING: When using this routine the data region should
be set equal to the viewport to avoid distortion (see
section 3 of the Graphical Supplement routine document).
B. Specification
================
SUBROUTINE //J06HAF// (HTS, M, N, IROT, IFAIL)
C INTEGER M, N, IROT, IFAIL
C //real// HTS(M,N)
C. Parameters
=============
HTS - //real// array of DIMENSION (M,p), where p.GE.N.
Before entry, HTS must contain the surface heights
evaluated on a regular rectangular grid of M*N mesh
points. The elements of the array HTS(I,J) should be
assigned so that I increases as X increases, and J
increases as Y increases.
Unchanged on exit.
M - INTEGER.
N - INTEGER.
On entry, M,N must specify the number of data points in
the X and Y direction respectively.
2.LE.M.LE.50, 2.LE.N.LE.50.
Unchanged on exit.
IROT - INTEGER.
On entry, IROT must specify the integer multiple of 90
degrees through which the surface is to be rotated. For
a rotation of zero degrees (IROT=0), the surface is
viewed from the corner HTS(M,N). The surface is rotated
clockwise about the Z axis by 90*IROT degrees. 0.LE.IROT
.LE.3.
Unchanged on exit.
IFAIL - INTEGER.
Before entry, IFAIL must be assigned a value. For users
not familiar with this parameter (described in Chapter
P01 of the NAG FORTRAN Library Manual or the NAG On-line
Information Supplement) the recommended value is 0.
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by this routine:-
IFAIL = 1
On entry, M.LT.2
or N.LT.2.
IFAIL = 2
On entry, IROT.LT.0
or IROT.GT.3.
IFAIL = 3
On entry, M.GT.50
or N.GT.50.
------
END OF J06HAF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06HBF ROUTINE
J06HBF NAG GRAPHICAL SUPPLEMENT ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of
this routine see the NAG Graphical Supplement Manual.
Terms marked //...// may be implementation dependent.
A. Purpose
==========
//J06HBF// draws an isometric projection of a
single-valued three-dimensional surface Z(X,Y) defined at
points on a regular rectangular grid. Options are
available for adjusting the height/width ratio of the
surface, drawing upper and/or lower profiles, and drawing
sections parallel to either or both axes.
WARNING: When using this routine the data region should
be set equal to the viewport to avoid distortion (see
section 3 of the Graphical Supplement routine document).
B. Specification
================
SUBROUTINE //J06HBF// (HTS, M, N, MDIM, HF,
1 IROT, SOLID, IBASE, ZBASE, JSECT,
2 ZMIN, ZMAX, RWS, NRWS, IFAIL)
C INTEGER M, N, MDIM, IROT, IBASE, JSECT,
C 1 NRWS, IFAIL
C LOGICAL SOLID
C //real// HTS(MDIM,N), HF, ZBASE, ZMIN, ZMAX,
C 1 RWS(NRWS)
C. Parameters
=============
HTS - //real// array of DIMENSION (MDIM,p) where p.GE.N.
Before entry, HTS must contain the surface heights
evaluated on a regular rectangular grid of M*N mesh
points. The elements of the array HTS(I,J) should be
assigned so that I increases as X increases, and J
increases as Y increases.
Unchanged on exit.
M - INTEGER.
N - INTEGER.
On entry, M, N must specify the number of data points in
the X and Y directions. M.GE.2. N.GE.2.
Unchanged on exit.
MDIM - INTEGER.
On entry, MDIM must specify the first dimension of the
array HTS as declared in the calling (sub)program. MDIM
.GE.M.
Unchanged on exit.
HF - //real//.
On entry, HF must specify the height factor used to
determine the vertical scale of the plotted surface.
This value allows the user to vary the relationship
between the height representation of the surface and the
X-Y extent. To be precise, the size of the base as
measured along the X axis in units of Z is taken as
HF*(ZMAX-ZMIN).
A suitable value for HF is 2.0; a larger value results
in a flatter surface, whereas a smaller value results in
a steeper surface.
Unchanged on exit.
IROT - INTEGER.
On entry, IROT must specify the integer multiple of 90
degrees through which the surface is to be rotated. For
IROT = 0, the surface is viewed from the corner
HTS(M,N). The surface is rotated clockwise about the Z
axis through 90 * IROT degrees. 0.LE.IROT.LE.3.
Unchanged on exit.
SOLID - LOGICAL.
On entry, SOLID should be set .TRUE. if only the upper
surface is to be drawn. SOLID should be set .FALSE. if
the surface is a thin plate and both the lower and upper
surfaces are to be drawn.
Unchanged on exit.
IBASE - INTEGER.
On entry, IBASE must specify the type of base to be
drawn:
IBASE = 0 - no base is drawn
IBASE = -1 - base drawn through ZMIN
IBASE = +1 - base drawn through ZBASE.
(A base can only be drawn if SOLID is set .TRUE.).
Unchanged on exit.
ZBASE - //real//.
On entry, ZBASE must specify the height through which
the base is to be drawn if IBASE = 1. No checking is
performed to verify that the value of ZBASE is
reasonable.
On exit, ZBASE contains the height at which the base was
drawn (or ZMIN if no base drawn).
JSECT - INTEGER.
On entry, JSECT must specify the method to be used for
drawing the surface:
JSECT = -1 - sections taken parallel to
Y axis
JSECT = +1 - sections taken parallel to
X axis
JSECT = 0 - sections taken parallel to
both axes.
Unchanged on exit.
ZMIN - //real//.
ZMAX - //real//.
On entry, ZMIN and ZMAX must specify the minimum and
maximum heights to be used in determining the vertical
scale of the surface plot. If on entry ZMIN is set equal
to ZMAX, the subroutine will scan the array HTS and
assign the minimum and maximum values to ZMIN and ZMAX -
this is the usual case. However the user can set values
in ZMIN and ZMAX; this can be useful for plotting a
number of surfaces to the same vertical scale.
For ZMIN not equal to ZMAX on entry, the values are
unchanged on exit; otherwise they are assigned the
appropriate minimum and maximum values from the array
HTS.
RWS - //real// array of DIMENSION at least (NRWS).
Used as working space.
NRWS - INTEGER.
On entry, NRWS must specify the dimension of RWS.
NRWS.GE.5*max(M,N).
IFAIL - INTEGER.
Before entry, IFAIL must be assigned a value. For users
not familiar with this parameter (described in Chapter
P01 of the NAG FORTRAN Library Manual or the NAG On-line
Information Supplement) the recommended value is 0.
Unless the routine detects an error (see next section),
IFAIL contains 0 on exit.
D. Error Indicators and Warnings
================================
Errors detected by this routine:-
IFAIL = 1
On entry, M.LT.2
or N.LT.2
or MDIM.LT.M.
IFAIL = 2
On entry, HF.LE.0.0.
IFAIL = 3
On entry, inconsistent values of IBASE and SOLID are
supplied. Occurs if SOLID = .FALSE. and IBASE.NE.0, or
if IBASE.LT.-1 or IBASE.GT.1.
IFAIL = 4
On entry, IROT.LT.0
or IROT.GT.3.
IFAIL = 5
On entry, ZMIN.GT.ZMAX.
IFAIL = 6
On entry, NRWS.LT.5*max(M,N).
------
END OF J06HBF GRAPHICAL SUPPLEMENT SUMMARY - MARK 1
NOVEMBER 1981
------
J06WAF ROUTINE
J06WAF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06WAF// performs two functions:
(i) it carries out all necessary initialisations for the
NAG graphical system;
(ii) it establishes a mapping of the initial data region
onto the default viewport.
B. Specification
================
SUBROUTINE //J06WAF//
C. Parameters
=============
None.
D. Further Comments
===================
Either //J06WAF// or //J06XAF// must be the first NAG
Graphical Supplement routine called. In an overlayed or
segmented program, these routines should be placed in
the main overlay or root segment.
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06WAF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06WBF ROUTINE
J06WBF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06WBF// performs two functions:
(i) it declares the current data region;
(ii) it establishes a mapping of this data region onto
the current viewport, with the option of a margin
around the plot.
B. Specification
================
SUBROUTINE //J06WBF// (XMIN, XMAX, YMIN, YMAX,
1 MARGIN)
C INTEGER MARGIN
C //real// XMIN, XMAX, YMIN, YMAX
C. Parameters
=============
XMIN - //real//.
XMAX - //real//.
YMIN - //real//.
YMAX - //real//.
On entry, XMIN, XMAX, YMIN, YMAX must specify the limits
of the user's data region; the point (XMIN,YMIN)
indicates the lower left-hand corner, and (XMAX,YMAX)
the upper right-hand corner.
Unchanged on exit.
MARGIN - INTEGER.
On entry, MARGIN must specify whether a margin is to be
left around the data region. If MARGIN = 0, no margin is
left; if MARGIN = 1 a margin is included equivalent to
10% of the height of the data region of the plot, and 5%
at the top, and to 10% of the width of the data region
at the left of the plot, and 5% at the right.
Unchanged on exit.
D. Further Comments
===================
If XMIN = XMAX, or YMIN = YMAX, the call of //J06WBF//
is ignored and a warning message is output to the error
message channel (see //X04AAF//).
If MARGIN.NE.0 or 1, the effect is the same as
MARGIN = 0, and no warning is given.
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06WBF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06WCF ROUTINE
J06WCF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06WCF// sets the current viewport on the plotting
surface and establishes a mapping of the current data
region onto this viewport.
B. Specification
================
SUBROUTINE //J06WCF// (P1, P2, Q1, Q2)
C //real// P1, P2, Q1, Q2
C. Parameters
=============
P1 - //real//.
P2 - //real//.
Q1 - //real//.
Q2 - //real//.
On entry, P1, P2, Q1, Q2 must specify the limits of the
new viewport in normalised device co-ordinates (see
Essential Introduction to the Graphical Supplement
Manual for details).
Unchanged on exit.
D. Further Comments
===================
If P1.LT.0.0, P1.GE.P2, Q1.LT.0.0, or Q1.GE.Q2, the call
of //J06WCF// is ignored, and a warning message is
output to the error message channel (see //X04AAF//).
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06WCF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06WDF ROUTINE
J06WDF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06WDF// selects a new frame: on a plotter fresh paper
is taken, on a display the screen is cleared. (It is an
alternative to making a direct call to the underlying
package for new frame selection.)
B. Specification
================
SUBROUTINE //J06WDF//
C. Parameters
=============
None.
D. Further Comments
===================
This routine is intended as an alternative to a direct
call to the frame advance routine in the underlying
package, and simply increases the portability of
programs which use the NAG Graphical Supplement.
Note that many graphical packages offer two frame
advance routines for use with interactive displays: one
routine clears the screen after receiving a user prompt,
the other clears the screen immediately. It is intended
that, where such a choice is available, //J06WDF// calls
the former. (If an immediate clear is required, the user
should make a direct call to the alternative frame
advance routine in the underlying package.)
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06WDF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06WZF ROUTINE
J06WZF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06WZF// terminates graphical output to the currently
selected device. (It is an alternative to making a direct
call to the underlying package for termination.)
B. Specification
================
SUBROUTINE //J06WZF//
C. Parameters
=============
None.
D. Further Comments
===================
This routine is intended as an alternative to a direct
call to the termination routine in the underlying
package, and simply increases the portability of
programs which use the NAG Graphical Supplement.
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06WZF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06XAF ROUTINE
J06XAF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06XAF// initialises the NAG graphical system. It is
called automatically by //J06WAF//, but if the user sets
up a mapping using direct calls to the underlying
package, then //J06XAF// must be the first NAG graphical
routine called.
B. Specification
================
SUBROUTINE //J06XAF//
C. Parameters
=============
None.
D. Further Comments
===================
Either //J06WAF// or //J06XAF// must be the first NAG
Graphical Supplement routine called. In an overlayed or
segmented program, these routines should be placed in
the main overlay or root segment.
Note that //J06XAF// does not exist in the NAG
Lineprinter Interface; //J06WAF// must be used.
In the Lineprinter Interface, //J06WAF// sets the
default tolerance factor for straight line approximation
of curves to 200. This default may be reset by a call to
//J06XEF// (pen attributes, character qualities and
character and marker scaling factors have no equivalent
in the Lineprinter Interface, and calls to routines
which set them will have no effect).
------
END OF J06XAF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06XBF ROUTINE
J06XBF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06XBF// indicates the user's data region to the NAG
graphical system. It is called automatically by
//J06WBF//, but if the user sets up a mapping using
direct calls to the underlying package, then //J06XBF//
should be called to pass the data region information to
the NAG system.
B. Specification
================
SUBROUTINE //J06XBF// (XMIN, XMAX, YMIN, YMAX)
C //real// XMIN, XMAX, YMIN, YMAX
C. Parameters
=============
XMIN - //real//.
XMAX - //real//.
YMIN - //real//.
YMAX - //real//.
On entry, XMIN, XMAX, YMIN, YMAX must specify the limits
of the user's data region: the point (XMIN,YMIN) must
indicate the lower left-hand corner point, and
(XMAX,YMAX) the upper right-hand corner point.
Unchanged on exit.
D. Further Comments
===================
This routine has no graphical function; the user must
specify the required mapping onto the plotting surface
in appropriate calls to the underlying graphics package.
Note that //J06XBF// does not exist in the NAG
Lineprinter Interface; //J06WBF// must be used.
------
END OF J06XBF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06XDF ROUTINE
J06XDF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06XDF// defines attributes of colour, linestyle and
text font for a particular "pen"; it is used in
conjunction with NAG Graphical Supplement routines which
offer a highlighting option.
B. Specification
================
SUBROUTINE //J06XDF// (IPEN, ICOL, ILSTYL,
1 IFONT)
C INTEGER IPEN, ICOL, ILSTYL, IFONT
C. Parameters
=============
IPEN - INTEGER.
On entry, IPEN must specify the particular pen being
defined (1.LE.IPEN.LE.4).
Unchanged on exit.
ICOL - INTEGER.
ILSTYL - INTEGER.
IFONT - INTEGER.
On entry, ICOL, ILSTYL, IFONT must specify the colour,
linestyle and text font values respectively of pen
number IPEN.
Unchanged on exit.
D. Further Comments
===================
If IPEN.LT.1 or IPEN.GT.4, or any of ICOL, ILSTYL or
IFONT is outside the range defined for the particular
implementation of the Interface, the call to //J06XDF//
is ignored and a warning message is output to the error
message channel (see //X04AAF//).
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06XDF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06XEF ROUTINE
J06XEF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06XEF// sets the tolerance factor used in the straight
line approximation of curves.
B. Specification
================
SUBROUTINE //J06XEF// (ITOLF)
C INTEGER ITOLF
C. Parameters
=============
ITOLF - INTEGER.
On entry, ITOLF must specify the required tolerance
factor.
Unchanged on exit.
D. Further Comments
===================
If ITOLF.LE.0, the call to //J06XEF// is ignored, and a
warning message is output to the error message channel
(see //X04AAF//).
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06XEF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06XFF ROUTINE
J06XFF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06XFF// selects character and marker quality; medium
and high qualities are available.
B. Specification
================
SUBROUTINE //J06XFF// (IQUAL)
C INTEGER IQUAL
C. Parameters
=============
IQUAL - INTEGER.
On entry, IQUAL must specify the required character
quality. IQUAL = 1 selects medium quality; IQUAL = 2
selects high quality. By default, ITOLF is set to 2000
(except in the Lineprinter Interface where it is set to
200).
Unchanged on exit.
D. Further Comments
===================
If IQUAL.LT.1 or IQUAL.GT.2, the call to //J06XFF// is
ignored, and a warning message is output to the error
message channel (see //X04AAF//).
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06XFF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06XGF ROUTINE
J06XGF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06XGF// sets character size scaling factors.
B. Specification
================
SUBROUTINE //J06XGF// (CSCW, CSCH)
C //real// CSCW, CSCH
C. Parameters
=============
CSCW - //real//.
CSCH - //real//.
On entry, CSCW, CSCH must specify scale factors for the
width and height of all characters drawn by NAG
Graphical Supplement routines.
Unchanged on exit.
D. Further Comments
===================
If CSCW.LE.0.0 or CSCH.LE.0.0, the call to //J06XGF// is
ignored, and a warning message is output to the error
message channel (see //X04AAF//).
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06XGF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06XHF ROUTINE
J06XHF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06XHF// sets the marker size scaling factor.
B. Specification
================
SUBROUTINE //J06XHF// (AMSC)
C //real// AMSC
C. Parameters
=============
AMSC - //real//.
On entry, AMSC must specify a scale factor for the size
of all markers drawn.
Unchanged on exit.
D. Further Comments
===================
If AMSC.LE.0.0, the call to //J06XHF// is ignored, and a
warning message is output to the error message channel
(see //X04AAF//).
For an example of the use of this routine, see the
Interface Text Program in the Graphical Supplement
Manual.
------
END OF J06XHF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YAF ROUTINE
J06YAF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement. Terms marked
// ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of graphical interfaces.
A. Purpose
==========
//J06YAF// moves the pen to the position (X,Y) in user
co-ordinates. No line is drawn.
B. Specification
================
SUBROUTINE //J06YAF// (X, Y)
C //real// X, Y
C. Parameters
=============
X - //real//.
Y - //real//.
On entry, X, Y must specify the X and Y co-ordinates of
the new pen position.
Unchanged on exit.
D. Further Comments
===================
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YAF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YBF ROUTINE
J06YBF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of graphical interfaces.
A. Purpose
==========
//J06YBF// increments the pen position by an amount
(DX,DY) in user co-ordinates. No line is drawn.
B. Specification
================
SUBROUTINE //J06YBF// (DX, DY)
C //real// DX, DY
C. Parameters
=============
DX - //real//.
DY - //real//.
On entry, DX, DY must specify the pen position
increments.
Unchanged on exit.
D. Further Comments
===================
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YBF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YCF ROUTINE
J06YCF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of graphical interfaces.
A. Purpose
==========
//J06YCF// draws a line from the current pen position to
the position (X,Y) in user co-ordinates. The pen position
is updated to (X,Y).
B. Specification
================
SUBROUTINE //J06YCF// (X, Y)
C //real// X, Y
C. Parameters
=============
X - //real//.
Y - //real//.
On entry, X,Y must specify the X and Y co-ordinates of
the point to which the line is to be drawn.
Unchanged on exit.
D. Further Comments
===================
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YCF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YDF ROUTINE
J06YDF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of graphical interfaces.
A. Purpose
==========
//J06YDF// draws a line from the current pen position,
advancing by an increment (DX,DY) in user co-ordinates.
The current pen position is incremented by (DX,DY).
B. Specification
================
SUBROUTINE //J06YDF// (DX, DY)
C //real// DX, DY
C. Parameters
=============
DX - //real//.
DY - //real//.
On entry, DX, DY must specify the X and Y increments of
the line to be drawn.
Unchanged on exit.
D. Further Comments
===================
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YDF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YGF ROUTINE
J06YGF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of graphical interfaces.
A. Purpose
==========
//J06YGF// draws a marker, centred at the current pen
position. The current pen position itself is unchanged.
B. Specification
================
SUBROUTINE //J06YGF// (IMARK)
C INTEGER IMARK
C. Parameters
=============
IMARK - INTEGER.
On entry, IMARK must specify the particular marker
required. 1.LE.IMARK.LE.9.
Unchanged on exit.
The appearance of each symbol may be
Interface-dependent, implementation-dependent and
hardware device-dependent.
A simple test program to generate them all is probably
the easiest way of determining their precise appearance.
For those Interface versions supported by NAG,
approximate symbol shapes are given in the Appendix to
the Essential Introduction.
D. Further Comments
===================
If IMARK.LT.1 or IMARK.GT.9, marker number 1 is
selected. If it proves impossible to draw a particular
marker in a certain implementation, an alternative
symbol will be used.
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YGF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YHF ROUTINE
J06YHF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of graphical interfaces.
A. Purpose
==========
//J06YHF// draws a sequence of N characters stored in A1
format in the array ICHAR, starting at the current pen
position.
On exit, the current pen position follows the last
character drawn.
B. Specification
================
SUBROUTINE //J06YHF// (ICHAR, N)
C INTEGER ICHAR(N), N
C. Parameters
=============
ICHAR - INTEGER array of DIMENSION at least (N).
On entry, ICHAR(I), I = 1,...,N, must contain the N
characters to be drawn, stored in A1 format. The
available character set is
ABCDEFGHIJKLMNOPQRSTUVWXYZ
0123456789
-+*/=(),. and blank.
Unchanged on exit.
D. Further Comments
===================
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YHF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YJF ROUTINE
J06YJF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of graphical interfaces.
A. Purpose
==========
//J06YJF// sets the size of markers.
B. Specification
================
SUBROUTINE //J06YJF// (SIZE)
C //real// SIZE
C. Parameters
=============
SIZE - //real//.
On entry, SIZE must specify the width of markers in X
axis units.
Unchanged on exit.
D. Further Comments
===================
//J06YJF// is called by Supplement routines to set
marker size. The actual size drawn is scaled by a factor
which is set to 1.0 at initialisation, but which may be
altered by the user through a call to //J06XHF//.
If SIZE.LE.0.0, the call to //J06YJF// is ignored.
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YJF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YKF ROUTINE
J06YKF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of grahical interfaces.
A. Purpose
==========
//J06YKF// sets the width and height of characters.
B. Specification
================
SUBROUTINE //J06YKF// (WIDTH, HEIGHT)
C //real// WIDTH, HEIGHT
C. Parameters
=============
WIDTH - //real//.
On entry, WIDTH must specify the width of characters in
X axis units.
Unchanged on exit.
HEIGHT - //real//.
On entry, HEIGHT must specify the height of characters
in Y axis units.
Unchanged on exit.
D. Further Comments
===================
//J06YKF// is called by Supplement routines to set
character size. The actual size drawn is scaled by width
and height factors, which are set to 1.0 at
initialisation but which may be altered by the user
through a call to //J06XGF//.
Note that the fitting of a character within a character
box may depend on the character quality selected see
section 3 of the //J06YHF// routine document in the
Graphical Supplement Manual.
If WIDTH.LE.0.0 or HEIGHT.LE.0.0, the call to //J06YKF//
is ignored.
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YKF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YLF ROUTINE
J06YLF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of graphical interfaces.
A. Purpose
==========
//J06YLF// sets the spacing between characters.
B. Specification
================
SUBROUTINE //J06YLF// (DX, DY)
C //real// DX, DY
C. Parameters
=============
DX - //real//.
DY - //real//.
On entry, DX, DY must specify the movement of the
current pen position in the X and Y directions, after a
character is drawn.
Unchanged on exit.
D. Further Comments
===================
//J06YLF// is called by Supplement routines to set
character spacing. When the routines are executed, the
actual spacing is scaled by any width and height factors
set by the user in a call to //J06XGF//, i.e. the same
scale factors as are applied to character size are also
applied to character spacing.
Note also that a positive increment in the X direction
is taken as a left-to-right increment on the plotting
surface, and a positive increment in the Y direction as
a bottom-to-top increment - this is to accommodate
situations where the user specifies his data region
limits the "wrong way round", i.e. XMIN.GT.XMAX, or
YMIN.GT.YMAX, or both.
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YLF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06YMF ROUTINE
J06YMF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
This routine may be called directly by users, but its
specification may change at Mark 2 to reflect moves
towards standardisation of graphical interfaces.
A. Purpose
==========
//J06YMF// selects a particular pen.
B. Specification
================
SUBROUTINE //J06YMF// (IPEN)
C INTEGER IPEN
C. Parameters
=============
IPEN - INTEGER.
On entry, IPEN must specify the particular pen number
required.
Unchanged on exit.
D. Further Comments
===================
If IPEN.LT.1 or IPEN.GT.4, pen number 1 is selected.
For an example of the use of this routine, see the
Interface Test Program in the Graphical Supplement
Manual.
------
END OF J06YMF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06ZAF ROUTINE
J06ZAF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06ZAF// draws a text string.
B. Specification
================
SUBROUTINE //J06ZAF// (ICHARS, NCHARS)
C INTEGER ICHARS(NCHARS), NCHARS
C. Parameters
=============
ICHARS - INTEGER array of DIMENSION
at least (NCHARS), or Hollerith constant of length
NCHARS.
On entry, ICHARS must contain the text to be output. If
ICHARS is an INTEGER array, the characters must be
stored in An format, where n is the number of characters
which can be stored in one integer location.
Unchanged on exit.
NCHARS - INTEGER.
On entry, NCHARS must specify the number of characters
to be drawn. NCHARS.LE.80.
If NCHARS.GT.80, only the first 80 characters will be
drawn.
Unchanged on exit.
D. Further Comments
===================
None.
------
END OF J06ZAF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06ZBF ROUTINE
J06ZBF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06ZBF// draws an integer in FORTRAN integer format.
B. Specification
================
SUBROUTINE //J06ZBF// (NUM, NWIDTH)
C INTEGER NUM, NWIDTH
C. Parameters
=============
NUM - INTEGER.
On entry, NUM must contain the integer to be drawn.
Unchanged on exit.
NWIDTH - INTEGER.
On entry, NWIDTH must specify the format for NUM.
Unchanged on exit.
D. Further Comments
===================
None.
------
END OF J06ZBF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06ZCF ROUTINE
J06ZCF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06ZCF// draws a //real// number in FORTRAN floating
point format.
B. Specification
================
SUBROUTINE //J06ZCF// (FNUM, NWIDTH, NDP)
C INTEGER NWIDTH, NDP
C //real// FNUM
C. Parameters
=============
FNUM - //real//.
On entry, FNUM must contain the number to be drawn.
Unchanged on exit.
NWIDTH - INTEGER.
NDP - INTEGER.
On entry, NWIDTH, NDP must specify the format for FNUM.
If NWIDTH.GT.0, FNUM is drawn right-justified in a field
of total width NWIDTH character positions, with NDP
figures after the decimal point.
8.LE.NWIDTH.LE.20
1.LE.NDP.LE.NWIDTH-7.
If NWIDTH.LE.0, FNUM is drawn left-justified with NDP
figures after the decimal point.
1.LE.NDP.LE.13.
In each case, one place is received for the sign.
Unchanged on exit.
D. Further Comments
===================
None.
------
END OF J06ZCF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
J06ZDF ROUTINE
J06ZDF NAG GRAPHICAL INTERFACE ROUTINE SUMMARY
======
IMPORTANT: For a complete specification of the use of this
routine see the NAG Graphical Supplement Manual. Terms
marked // ... // may be implementation dependent.
A. Purpose
==========
//J06ZDF// draws a //real// number in FORTRAN fixed point
format.
B. Specification
================
SUBROUTINE //J06ZDF// (FNUM, NWIDTH, NDP)
C INTEGER NWIDTH, NDP
C //real// FNUM
C. Parameters
=============
FNUM - //real//.
On entry, FNUM must contain the real number to be drawn.
Unchanged on exit.
NWIDTH - INTEGER.
NDP - INTEGER.
On entry, NWIDTH, NDP specify the format for FNUM.
NWIDTH must specify the total width of the field, and
NDP must specify the number of figures after the decimal
point.
If NWIDTH.GT.0, FNUM is drawn right-justified and
2.LE.NWIDTH.LE.20,
0.LE.NDP.LE.NWIDTH-2.
If NWIDTH.GE.0, 0.LE.NDP.LE.18.
Unchanged on exit.
D. Further Comments
===================
None.
------
END OF J06ZDF GRAPHICAL INTERFACE SUMMARY - MARK 1
NOVEMBER 1981
------
S07AAF Tan(x)
S09AAF Arcsin(x)
S09ABF Arccos(x)
S10AAF Tanh(x)
S10ABF Sinh(x)
S10ACF Cosh(x)
S11AAF Arctanh(x)
S11ABF Arcsinh(x)
S11ACF Arccosh(x)
S13AAF Exponential integral, E1(x)
S13ACF Cosine integral, Ci(x)
S13ADF Sine integral, Si(x)
S14AAF Gamma function
S14ABF Log Gamma function
S15ABF Cumulative normal distribution function, P(x)
S15ACF Complement of cumulative normal distribution function, Q(x)
S15ADF Complement of error function, erfc(x)
S15AEF Error function, erf(x)
S15AFF Dawson's integral
S17ACF Bessel functions, Y0(x)
S17ADF Bessel functions, Y1(x)
S17AEF Bessel functions, J0(x)
S17AFF Bessel functions, J1(x)
S17AGF Airy functions, Ai(x)
S17AHF Airy functions, Bi(x)
S17AJF Airy functions, Ai'(x)
S17AKF Airy functions, Bi'(x)
S18ACF Modified Bessel functions, K0(x)
S18ADF Modified Bessel functions, K1(x)
S18AEF Modified Bessel functions, I0(x)
S18AFF Modified Bessel functions, I1(x)
S18CCF Modified Bessel functions, exp(x)*K0(x)
S18CDF Modified Bessel functions, exp(x)*K1(x)
S18CEF Modified Bessel functions, exp(-abs(x))*I0(x)
S18CFF Modified Bessel functions, exp(-abs(x))*I1(x)
S20ACF Fresnel integrals, S(x)
S20ADF Fresnel integrals, C(x)
S21BAF Elliptic integrals, degenerate symmetrised integral of 1st kind, Rc(x,y)
S21BBF Elliptic integrals, symmetrised integral of 1st kind, Rf(x,y,z)
S21BCF Elliptic integrals, symmetrised integral of 2nd kind, Rd(x,y,z)
S21BDF Elliptic integrals, symmetrised integral of 3rd kind, Rj(x,y,z,r)
P01AAF Return value of error indicator/terminate with error message
C02ADF All zeros of polynomial, Grant and Hitchins' method, complex coefficients
C02AEF All zeros of polynomial, Grant and Hitchins' method, real coefficients
X01AAF Pi
X01ABF Euler's constant, Gamma
X02AAF Smallest possible e such that 1.0+e > 1.0
X02ABF Smallest representable positive real number
X02ACF Largest representable positive real number
X02ADF Ratio of X02ABF to X02AAF
X02AEF Largest negative permissible argument for EXP
X02AFF Largest positive permissible argument for EXP
X02AGF Smallest representable positive real number with reciprocal also
representable
X02AHF Largest permissible argument for SIN and COS
X02BAF Base of floating-point arithmetic
X02BBF Largest representable integer
X02BCF Largest positive integer power to which 2.0 can be raised
without overflow
X02BDF Largest negative integer power to which 2.0 can be raised
without underflow
X02BEF Maximum number of decimal digits that can be represented
X02CAF Estimate of active-set size (for paged virtual store machines)
X02DAF Switch for taking precautions to avoid underflow
X04AAF Return or set unit number for error messages
X04ABF Return or set unit number for advisory messages
SUMMARY
NAG FORTRAN MARK 10 LIBRARY CONCISE SUMMARY
N.B. This summary does not include routines which have been scheduled
for withdrawal at Mark 11.
A02 complex arithmetic
C02 zeros of polynomials
C05 roots of one or more transendental equations
C06 summation of series
D01 quadrature
D02 ordinary differential equations
D03 partial differential equations
D04 numerical differentiation
D05 integral equations
E01 interpolation
E02 curve and surface fitting
E04 minimizing or maximizing a function
F01 matrix operations, including inversion
F02 eigenvalues and eigenvectors
F03 determinants
F04 simultaneous linear equations
F05 orthogonalisation
G01 simple calculations on statistical data
G02 correlation and regression analysis
G04 analysis of variance
G05 random number generators
G08 nonparametric statistics
G13 time series analysis
H operations research
J06 NAG mark 1 graphical supplement
M01 sorting
P01 error trapping
S approximations of special functions
X01 mathematical constants
X02 machine constants
X03 innerproducts
X04 input/output utilities
C06ACF Circular convolution of two real vectors of period 2**M
C06ADF Discrete Fourier transform, F.F.T. algorithm,
complex data values within a multi-variable transform
C06BAF Acceleration of convergence of a sequence, by epsilon algorithm
C06DBF Sum of a Chebyshev series
C06EAF Discrete Fourier transform, F.F.T. algorithm,
no extra workspace, real data values
C06EBF Discrete Fourier transform, F.F.T. algorithm,
no extra workspace, complex data values (Hermitian sequence)
C06ECF Discrete Fourier transform, F.F.T. algorithm,
no extra workspace, complex data values (general sequence)
C06FAF Discrete Fourier transform, F.F.T. algorithm,
extra workspace for greater speed, real data values
C06FBF Discrete Fourier transform, F.F.T. algorithm,
extra workspace for greater speed, complex data values (Hermitian sequence)
C06FCF Discrete Fourier transform, F.F.T. algorithm,
extra workspace for greater speed, complex data values (general sequence)
C06GBF Complex conjugate of complex data values, Hermitian sequence
C06GCF Complex conjugate of complex data values, general sequence
D01AHF Quadrature for one-dimensional integrals,
adaptive integration of a function over a finite interval,
strategy due to Patterson, suitable for well-behaved integrands
D01AJF Quadrature for one-dimensional integrals,
adaptive integration of a function over a finite interval,
strategy due to Piessens & de Doncker, allowing for badly-behaved integrands
D01AKF Quadrature for one-dimensional integrals,
adaptive integration of a function over a finite interval,
method suitable for oscillating functions
D01ALF Quadrature for one-dimensional integrals,
adaptive integration of a function over a finite interval,
allowing for singularities at user-specified points
D01AMF Quadrature for one-dimensional integrals,
adaptive integration of a function over an infinite or semi-infinite interval
D01ANF Quadrature for one-dimensional integrals,
adaptive integration of a function over a finite interval,
weight function cos(wx) or sin(wx)
D01APF Quadrature for one-dimensional integrals,
adaptive integration of a function over a finite interval,
weight function with end-point singularities of algebraico-logarithmic type
D01AQF Quadrature for one-dimensional integrals,
adaptive integration of a function over a finite interval,
weight function 1/(x-c) (Hilbert transform)
D01ARF Quadrature for one-dimensional integrals,
adaptive integration of a function over a finite interval,
with provision for indefinite integrals also
D01BAF Quadrature for one-dimensional integrals, Gaussian rule-evaluation
D01BBF Weights and abscissae for Gaussian quadrature rules,
restricted choice of rule, using pre-computed weights and abscissae
D01BCF Weights and abscissae for Gaussian quadrature rules,
more general choice of rule, calculating the weights and abscissae
D01BDF Quadrature for one-dimensional integrals,
non-adaptive integration over a finite interval
D01DAF Quadrature for two-dimensional integrals over a finite region
D01FBF Quadrature for multi-dimensional integrals, over a hyper-rectangle,
Gaussian rule-evaluation
D01FCF Quadrature for multi-dimensional integrals, over a hyper-rectangle,
adaptive method
D01FDF Quadrature for multi-dimensional integrals,
over a general product region, Sag-Szekeres method (also over n-sphere)
D01GAF Quadrature for one-dimensional integrals,
integration of a function defined by data values only
D01GBF Quadrature for multi-dimensional integrals, over a hyper-rectangle,
Monte-Carlo method
D01GCF Quadrature for multi-dimensional integrals,
over a general product region, number-theoretic method
D01GYF Korobov optimal coefficients for use in D01GCF,
when number of points is prime
D01GZF Korobov optimal coefficients for use in D01GCF,
when number of points is a product of 2 primes
D01JAF Quadrature for multi-dimensional integrals, over an n-sphere (n<=4),
allowing for badly behaved integrands
D01PAF Quadrature for multi-dimensional integrals, over an n-simplex
E04ABF Minimum, function of one variable using function values only
E04BBF Minimum, function of one variable, using first derivative
E04CCF Unconstrained minimum, function of several variables, (comprehensive),
using function values only, simplex algorithm
E04CGF Unconstrained minimum, function of several variables, (easy-to-use),
using function values only, quasi-Newton algorithm
E04DBF Unconstrained minimum, function of several variables, (comprehensive),
using first derivatives, conjugate direction algorithm
E04DEF Unconstrained minimum, function of several variables, (easy-to-use),
using first derivatives, quasi-Newton algorithm
E04DFF Unconstrained minimum, function of several variables, (easy-to-use),
using first derivatives, modified Newton algorithm
E04EBF Unconstrained minimum, function of several variables, (easy-to-use),
using first and second derivatives, modified Newton algorithm
E04FCF Unconstrained minimum, function of several variables, sum of squares,
(comprehensive), using function values only,
combined Gauss-Newton and modified Newton algorithm
E04FDF Unconstrained minimum, function of several variables, sum of squares,
(easy-to-use), using function values only,
combined Gauss-Newton and modified Newton algorithm
E04GBF Unconstrained minimum, function of several variables, sum of squares,
(comprehensive), using first derivatives,
combined Gauss-Newton and quasi-Newton algorithm
E04GCF Unconstrained minimum, function of several variables, sum of squares,
(easy-to-use), using first derivatives,
combined Gauss-Newton and quasi-Newton algorithm
E04GDF Unconstrained minimum, function of several variables, sum of squares,
(comprehensive), using first derivatives,
combined Gauss-Newton and modified Newton algorithm
E04GEF Unconstrained minimum, function of several variables, sum of squares,
(easy-to-use), using first derivatives,
combined Gauss-Newton and modified Newton algorithm
E04HBF Finite-difference intervals for estimating first derivatives
E04HCF Check user's routine calculating first derivatives of function
E04HDF Check user's routine calculating second derivatives of function
E04HEF Unconstrained minimum, function of several variables, sum of squares,
(comprehensive), using second derivatives,
combined Gauss-Newton and modified Newton algorithm
E04HFF Unconstrained minimum, function of several variables, sum of squares,
(easy-to-use), using second derivatives,
combined Gauss-Newton and modified Newton algorithm
E04JAF Minimum, function of several variables, simple bounds, (easy-to-use),
using function values only, quasi-Newton algorithm
E04JBF Minimum, function of several variables, simple bounds, (comprehensive),
using function values only, quasi-Newton algorithm
E04KAF Minimum, function of several variables, simple bounds, (easy-to-use),
using first derivatives, quasi-Newton algorithm
E04KBF Minimum, function of several variables, simple bounds, (comprehensive),
using first derivatives, quasi-Newton algorithm
E04KCF Minimum, function of several variables, simple bounds, (easy-to-use),
using first derivatives, modified Newton algorithm
E04KDF Minimum, function of several variables, simple bounds, (comprehensive),
using first derivatives, modified Newton algorithm
E04LAF Minimum, function of several variables, simple bounds, (easy-to-use),
using first and second derivatives, modified Newton algorithm
E04LBF Minimum, function of several variables, simple bounds, (comprehensive),
using first and second derivatives, modified Newton algorithm
E04UAF Minimum, function of several variables, general non-linear constraints,
using function and constraint values only,
sequential augmented Lagrangian quasi-Newton method
E04VAF Minimum, function of several variables, general non-linear constraints,
using first derivatives, sequential augmented Lagrangian quasi-Newton method
E04VBF Minimum, function of several variables, general non-linear constraints,
using first derivatives,
sequential augmented Lagrangian modified Newton method
E04WAF Minimum, function of several variables, general non-linear constraints,
using first and second derivatives,
sequential augmented Lagrangian modified Newton method
E04YAF Check user's routine calculating Jacobian of first derivatives
E04YBF Check user's routine calculating second derivative term
in Hessian matrix of sum of squares
E04ZAF Check user's routines calculating
first derivatives of function and constraints
E04ZBF Check user's routines calculating
second derivatives of function and constraints
F04AAF Simultaneous linear equations, (black box), real matrix,
approximate solution, multiple right hand sides
F04ABF Simultaneous linear equations, (black box),
real symmetric positive-definite matrix, accurate solution,
multiple right hand sides
F04ACF Simultaneous linear equations, (black box),
real symmetric positive-definite band matrix,
approximate solution, multiple right hand sides
F04ADF Simultaneous linear equations, (black box), complex matrix,
approximate solution, multiple right hand sides
F04AEF Simultaneous linear equations, (black box), real matrix,
accurate solution, multiple right hand sides
F04AFF Simultaneous linear equations, (coefficient matrix already factorised),
real symmetric positive definite matrix, accurate solution
F04AGF Simultaneous linear equations, (coefficient matrix already factorised),
real symmetric positive-definite matrix,
approximate solution (factorisation by F03AEF)
F04AHF Simultaneous linear equations, (coefficient matrix already factorised),
real matrix, accurate solution
F04AJF Simultaneous linear equations, (coefficient matrix already factorised),
real matrix, approximate solution (factorisation by F03AFF)
F04AKF Simultaneous linear equations, (coefficient matrix already factorised),
complex matrix, approximate solution
F04ALF Simultaneous linear equations, (coefficient matrix already factorised),
real symmetric positive-definite band matrix, approximate solution
F04AMF Least-squares, m real equations in n unknowns, rank =n, m>=n,
accurate solution (black box)
F04ANF Least-squares, m real equations in n unknowns, rank =n, m>=n,
approximate solution (after factorisation by F01AXF)
F04AQF Simultaneous linear equations, (coefficient matrix already factorised),
real symmetric positive-definite matrix,
approximate solution (factorisation by F01BQF)
F04ARF Simultaneous linear equations, (black box), real matrix,
approximate solution, one right hand side
F04ASF Simultaneous linear equations, (black box),
real symmetric positive-definite matrix, accurate solution, one right hand side
F04ATF Simultaneous linear equations, (black box), real matrix,
accurate solution, one right hand side
F04AWF Simultaneous linear equations, (coefficient matrix already factorised),
complex Hermitian positive-definite matrix, approximate solution
F04AXF Simultaneous linear equations, (coefficient matrix already factorised),
real sparse matrix, approximate solution
F04AYF Simultaneous linear equations, (coefficient matrix already factorised),
real matrix, approximate solution (factorisation by F01BTF)
F04AZF Simultaneous linear equations, (coefficient matrix already factorised),
real symmetric positive-definite matrix,
approximate solution (factorisation by F01BXF)
F04JAF Least-squares, m real equations in n unknowns, rank<=n, m>=n,
minimal least-squares solution
F04JDF Least-squares, m real equations in n unknowns, rank<=n, m<=n,
minimal least-squares solution
F04JGF Least-squares, m real equations in n unknowns, rank<=n, m>=n,
least-squares solution if rank=n, otherwise minimal least-squares solution
F04LDF Simultaneous linear equations, (coefficient matrix already factorised),
real band matrix, approximate solution
F04MCF Simultaneous linear equations, (coefficient matrix already factorised),
real symmetric positive-definite variable-bandwidth matrix,
approximate solution