Trailing-Edge
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PDP-10 Archives
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decus_20tap1_198111
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decus/20-0025/twoplo.bas
There are 2 other files named twoplo.bas in the archive. Click here to see a list.
1 LET J=0
2 LET P7=0
10 GO TO 620
20 LET Z=X^2
100 LET Y1=Z
105 LET T=0
110 LET T1=0
115 IF J=0 THEN 125
120 RETURN
125 PRINT
130 PRINT "WHAT ARE FMIN,FMAX,XMIN,XMAX,DELX";
135 INPUT Q0,Q1,Q2,Q3,Q4
140 LET Q5=(Q1-Q0)/60
145 LET Q6=0
150 LET J=2
155 FOR X = Q2 TO Q3 STEP Q4
160 GOSUB 10
165 IF Q6=0 THEN 315
170 IF Q6 = 20 THEN 185
175 PRINT " . ";
180 GOTO 195
185 PRINT " - ";
190 LET Q6 = 10
195 IF Y > Q1 THEN 305
200 IF Y1>Q1 THEN 305
205 IF Y < Q0 THEN 305
210 IF Y1<Q0 THEN 305
215 LET Q7 = Q0 + 2*Q5
220 LET Z=Q7+0.5*Q5
225 IF T>0 THEN 435
230 IF Z<Y THEN 430
235 IF T1>0 THEN 250
240 IF Z<Y1 THEN 250
245 GOTO 490
250 IF Z-Y>=2*Q5 THEN 280
255 IF Z-Y>=Q5 THEN 270
260 PRINT " +";
265 GOTO 370
270 PRINT " + ";
275 GOTO 370
280 PRINT "+ ";
285 GOTO 370
290 PRINT " ";
295 LET Q7= Q7+ 3*Q5
300 GOTO 220
305 PRINT "OFF SCALE. (X,Y,Z) =";X;",";Y;",";Y1
310 GOTO 380
315 PRINT
320 IF P7=99 THEN 335
325 PRINT
330 PRINT "(NOTE: Y IS PLOTTED '+', Z IS '.', AND '0' IS COMMON POINT)"
335 PRINT
340 PRINT "FOR X: TOP = ";Q2;" BOTTOM = ";Q3;" INCREMENT = ";Q4
345 PRINT "FOR FCTS: LEFT = ";Q0;" RIGHT = ";Q1;" INCREMENT = ";Q5
350 PRINT
355 PRINT " I.........I.........I.........I.........I.........I.........I"
360 PRINT
365 GOTO 185
370 LET T= 1
375 IF T1=0 THEN 295
380 LET Q6=Q6+1
385 IF INT(Z)=Q1 THEN 395
390 PRINT
395 NEXT X
400 LET P7=99
405 PRINT
410 PRINT
415 PRINT "TYPE 'S' TO STOP NOW, OR ELSE SPECIFY NEW VALUES"
420 PRINT "FOR FMIN,FMAX,XMIN,XMAX,DELX";
425 GOTO 135
430 IF T1>0 THEN 290
435 IF Z<Y1 THEN 290
440 IF Z-Y1>=2*Q5 THEN 470
445 IF Z-Y1>=Q5 THEN 460
450 PRINT " .";
455 GOTO 475
460 PRINT " . ";
465 GOTO 475
470 PRINT ". ";
475 LET T1=1
480 IF T>0 THEN 380
485 GOTO 295
490 IF Z-Y>=2*Q5 THEN 580
495 IF Z-Y>=Q5 THEN 540
500 IF Z-Y1>=2*Q5 THEN 530
505 IF Z-Y1>=Q5 THEN 520
510 PRINT " O";
515 GOTO 380
520 PRINT " .+";
525 GOTO 380
530 PRINT ". +";
535 GOTO 380
540 IF Z-Y1>=2*Q5 THEN 570
545 IF Z-Y1>=Q5 THEN 560
550 PRINT " +.";
555 GOTO 380
560 PRINT " O";
565 GOTO 380
570 PRINT ".+";
575 GOTO 380
580 IF Z-Y1>=2*Q5 THEN 610
585 IF Z-Y1>=Q5 THEN 600
590 PRINT "+ .";
595 GOTO 380
600 PRINT "+.";
605 GOTO 380
610 PRINT "O";
615 GOTO 380
620 PRINT
625 PRINT "THIS PROGRAM WILL SIMULTANEOUSLY PLOT TWO FUNCTIONS"
630 PRINT "OF A SINGLE VARIABLE X. TO USE, TYPE:"
635 PRINT
640 PRINT " 10 LET Y= (THE FIRST FUNCTION OF X)"
645 PRINT " 20 LET Z= (THE SECOND FUNCTION OF X AND/OR Y)"
650 PRINT " RUN"
655 PRINT
660 PRINT "THE FUNCTIONS Y AND Z MAY BE ANY LEGITIMATE 'BASIC'"
665 PRINT "EXPRESSIONS. INTERMEDIATE VARIABLES MAY BE DEFINED"
670 PRINT "USING INTERMEDIATE LINES, IF THE FUNCTIONS ARE TOO"
675 PRINT "COMPLICATED TO FIT ON ONE LINE."
680 END