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#ifndef lint |
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static const char RCSid[] = "$Id: tgraph.c,v 1.1 2003/02/22 02:07:26 greg Exp $"; |
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#endif |
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/* |
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* Routines for tel-a-graph file plotting |
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* |
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* 1/20/85 |
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*/ |
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|
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#include <ctype.h> |
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#include <string.h> |
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|
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#include "tgraph.h" |
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|
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|
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#define isfloat(a) (isdigit(a) || (a) == '-' || (a) == '.' || \ |
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(a) == 'E' || (a) == '+' || (a) == 'e') |
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|
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|
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extern double log10(); |
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|
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|
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|
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|
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|
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initialize() |
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|
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{ |
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int i; |
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|
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for (i = 0; i < NCUR; i++) |
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usecurve[i] = 1; |
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|
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} |
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|
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|
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|
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|
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|
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|
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option(s) /* record option */ |
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|
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char *s; |
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|
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{ |
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double atof(); |
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char *sp; |
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short userror = 0; |
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int i; |
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|
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if (s[0] == '-') |
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|
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switch(s[1]) { |
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|
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case 'x': |
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xmnset = atof(s+2); |
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break; |
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|
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case 'y': |
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ymnset = atof(s+2); |
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break; |
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|
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case 's': /* set symbol size */ |
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symrad = atoi(s+2); |
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break; |
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|
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case 'l': /* log plot */ |
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if (s[2] == 'x') |
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logx++; |
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else if (s[2] == 'y') |
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logy++; |
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else |
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userror++; |
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break; |
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|
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case 'g': /* grid on */ |
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grid = TRUE; |
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break; |
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|
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case 'p': /* polar coordinates */ |
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if (s[2] == 'd') |
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polar = DEGREES; |
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else if (s[2] == 'r') |
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polar = RADIANS; |
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else |
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userror++; |
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break; |
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|
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default: |
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for (sp = s+1; *sp && *sp > '@' && *sp < '@'+NCUR; sp++) |
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usecurve[*sp-'@'] = 0; |
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userror = *sp; |
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break; |
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} |
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else |
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|
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switch (s[1]) { |
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|
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case 'x': |
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xmxset = atof(s+2); |
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break; |
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|
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case 'y': |
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ymxset = atof(s+2); |
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break; |
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|
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default: |
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for (i = 0; i < 27; i++) |
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usecurve[i] = 0; |
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for (sp = s+1; *sp && *sp > '@' && *sp < '@'+NCUR; sp++) |
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usecurve[*sp-'@'] = 1; |
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userror = *sp; |
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} |
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|
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if (userror) |
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error(USER, "options are [-sSYMRAD][-g][-lx][-ly][-p{dr}][-xXMIN][+xXMAX][-yYMIN][+yYMAX][-C..|+C..]"); |
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|
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} |
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|
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|
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|
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|
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normalize(fp, fout) /* get extrema from file */ |
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|
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FILE *fp, *fout; |
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|
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{ |
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char line[255]; |
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double x, y; |
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long npoints = 0; |
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|
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ncurves = 0; |
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xmin = ymin = FHUGE; |
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xmax = ymax = -FHUGE; |
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|
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while (fgets(line, sizeof line, fp) != NULL) { |
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|
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if (fout != NULL) |
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fputs(line, fout); |
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|
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if (islabel(line)) |
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|
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ncurves++; |
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|
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else if (ncurves < NCUR && usecurve[ncurves] && isdata(line)) { |
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|
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if (getdata(line, &x, &y) < 0) |
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continue; |
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|
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if (x < xmin) |
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xmin = x; |
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if (x > xmax) |
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xmax = x; |
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if (y < ymin) |
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ymin = y; |
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if (y > ymax) |
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ymax = y; |
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|
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npoints++; |
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|
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} |
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|
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} |
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|
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if (npoints <= 1) |
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error(USER, "insufficient data in file"); |
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|
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} |
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|
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|
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|
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|
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|
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makeaxis(flag) /* make and print x and y axis */ |
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|
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int flag; |
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|
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{ |
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double xstep, ystep, step(), pos; |
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int xorg, yorg; |
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char *format, stemp[32]; |
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|
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/* set limits */ |
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if (polar) |
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if (xmax-xmin < ymax-ymin) /* null aspect for polar */ |
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xmax = xmin + ymax-ymin; |
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else |
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ymax = ymin + xmax-xmin; |
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else { |
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if (xmnset > -FHUGE) |
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if (logx) { |
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if (xmnset > FTINY) |
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xmin = log10(xmnset); |
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} |
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else |
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xmin = xmnset; |
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if (xmxset < FHUGE) |
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if (logx) { |
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if (xmxset > FTINY) |
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xmax = log10(xmxset); |
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} |
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else |
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xmax = xmxset; |
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if (ymnset > -FHUGE) |
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if (logy) { |
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if (ymnset > FTINY) |
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ymin = log10(ymnset); |
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} |
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else |
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ymin = ymnset; |
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if (ymxset < FHUGE) |
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if (logy) { |
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if (ymxset > FTINY) |
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ymax = log10(ymxset); |
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} |
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else |
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ymax = ymxset; |
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} |
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/* set step */ |
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if (logx) { |
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xmin = floor(xmin); |
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xmax = ceil(xmax); |
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xstep = 1.0; |
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} else |
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xstep = step(&xmin, &xmax); |
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|
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if (logy) { |
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ymin = floor(ymin); |
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ymax = ceil(ymax); |
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ystep = 1.0; |
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} else |
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ystep = step(&ymin, &ymax); |
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|
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xsize = xmax - xmin; |
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ysize = ymax - ymin; |
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|
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if (polar) /* null aspect again */ |
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if (xsize < ysize) |
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xmax = xmin + (xsize = ysize); |
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else |
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ymax = ymin + (ysize = xsize); |
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|
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if (xmin > 0.0) |
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xorg = XBEG; |
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else if (xmax < 0.0) |
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xorg = XBEG+XSIZ-1; |
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else |
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xorg = XCONV(0.0); |
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if (ymin > 0.0) |
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yorg = YBEG; |
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else if (ymax < 0.0) |
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yorg = YBEG+YSIZ-1; |
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else |
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yorg = YCONV(0.0); |
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/* make x-axis */ |
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if (flag & BOX) { |
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plseg(010, XBEG, YBEG, XBEG+XSIZ-1, YBEG); |
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plseg(010, XBEG, YBEG+YSIZ-1, XBEG+XSIZ-1, YBEG+YSIZ-1); |
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} |
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if (flag & ORIGIN) |
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plseg(010, XBEG, yorg, XBEG+XSIZ-1, yorg); |
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|
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#if CPM || MAC |
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if (xstep > 1.0) |
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format = "%5.0f"; |
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else |
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format = "%5.3f"; |
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#else |
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format = "%5g"; |
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#endif |
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if (logx) |
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format = "1e%-3.0f"; |
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|
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for (pos = xmin; pos < xmax+xstep/2; pos += xstep) { |
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if (flag & XTICS) |
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if (polar) |
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plseg(010, XCONV(pos), yorg-TSIZ/2, XCONV(pos), yorg+TSIZ/2); |
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else { |
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plseg(010, XCONV(pos), YBEG, XCONV(pos), YBEG-TSIZ); |
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plseg(010, XCONV(pos), YBEG+YSIZ-1, XCONV(pos), YBEG+YSIZ-1+TSIZ); |
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} |
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if (flag & XNUMS) { |
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sprintf(stemp, format, pos); |
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if (polar) |
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pprim(PMSTR, 020, XCONV(pos)-600, yorg-TSIZ-150, |
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XCONV(pos)-600, yorg-TSIZ-150, stemp); |
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else |
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pprim(PMSTR, 020, XCONV(pos)-600, YBEG-2*TSIZ-150, |
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XCONV(pos)-600, YBEG-2*TSIZ-150, stemp); |
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} |
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if (flag & XGRID) |
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plseg(040, XCONV(pos), YBEG, XCONV(pos), YBEG+YSIZ-1); |
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} |
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/* make y-axis */ |
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if (flag & BOX) { |
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plseg(010, XBEG, YBEG, XBEG, YBEG+YSIZ-1); |
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plseg(010, XBEG+XSIZ-1, YBEG, XBEG+XSIZ-1, YBEG+YSIZ-1); |
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} |
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if (flag & ORIGIN) |
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plseg(010, xorg, YBEG, xorg, YBEG+YSIZ-1); |
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|
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#if CPM || MAC |
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if (ystep > 1.0) |
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format = "%5.0f"; |
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else |
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format = "%5.3f"; |
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#else |
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format = "%5g"; |
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#endif |
310 |
if (logy) |
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format = "1e%-3.0f"; |
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|
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for (pos = ymin; pos < ymax+ystep/2; pos += ystep) { |
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if (flag & YTICS) |
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if (polar) |
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plseg(010, xorg-TSIZ/2, YCONV(pos), xorg+TSIZ/2, YCONV(pos)); |
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else { |
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plseg(010, XBEG, YCONV(pos), XBEG-TSIZ, YCONV(pos)); |
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plseg(010, XBEG+XSIZ-1, YCONV(pos), XBEG+XSIZ-1+TSIZ, YCONV(pos)); |
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} |
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if (flag & YNUMS) { |
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sprintf(stemp, format, pos); |
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if (polar) |
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pprim(PMSTR, 020, xorg-TSIZ-900, YCONV(pos)+32, |
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xorg-TSIZ-900, YCONV(pos)+32, stemp); |
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else |
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pprim(PMSTR, 020, XBEG-2*TSIZ-900, YCONV(pos)+32, |
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XBEG-2*TSIZ-900, YCONV(pos)+32, stemp); |
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} |
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if (flag & YGRID) |
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plseg(040, XBEG, YCONV(pos), XBEG+XSIZ-1, YCONV(pos)); |
332 |
} |
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|
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} |
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|
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|
337 |
|
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isdata(s) |
339 |
|
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register char *s; |
341 |
|
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{ |
343 |
int commas = 0; |
344 |
|
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while (*s) |
346 |
if (isfloat(*s) || isspace(*s)) |
347 |
s++; |
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else if (*s == ',') { |
349 |
commas++; |
350 |
s++; |
351 |
} |
352 |
else |
353 |
return 0; |
354 |
|
355 |
return commas <= 1; |
356 |
} |
357 |
|
358 |
|
359 |
|
360 |
|
361 |
islabel(s) |
362 |
|
363 |
char s[]; |
364 |
|
365 |
{ |
366 |
int i; |
367 |
|
368 |
i = strlen(s) - 2; |
369 |
|
370 |
return(i > 0 && s[0] == '"' && s[i] == '"'); |
371 |
} |
372 |
|
373 |
|
374 |
|
375 |
|
376 |
double |
377 |
step(mn, mx) /* compute step size for axis */ |
378 |
|
379 |
double *mn, *mx; |
380 |
|
381 |
{ |
382 |
static int steps[] = {100, 50, 20, 10, 5, 2, 1}; |
383 |
int i; |
384 |
double fact, stp; |
385 |
double pown(), floor(), ceil(); |
386 |
|
387 |
if (*mx-*mn <= FTINY) { |
388 |
stp = 1.0; |
389 |
} |
390 |
else { |
391 |
fact = pown(10.0, (int)log10(*mx-*mn)-2); |
392 |
stp = (*mx-*mn)/fact/MINDIVS; |
393 |
|
394 |
for (i = 0; stp < steps[i]; i++); |
395 |
stp = steps[i]*fact; |
396 |
} |
397 |
|
398 |
*mn = floor(*mn/stp) * stp; |
399 |
*mx = ceil(*mx/stp) * stp; |
400 |
|
401 |
return(stp); |
402 |
} |
403 |
|
404 |
|
405 |
|
406 |
double |
407 |
pown(x, n) /* raise x to an integer power */ |
408 |
|
409 |
double x; |
410 |
int n; |
411 |
|
412 |
{ |
413 |
register int i; |
414 |
double p = 1.0; |
415 |
|
416 |
if (n > 0) |
417 |
for (i = 0; i < n; i++) |
418 |
p *= x; |
419 |
else |
420 |
for (i = 0; i > n; i--) |
421 |
p /= x; |
422 |
|
423 |
return(p); |
424 |
} |
425 |
|
426 |
|
427 |
|
428 |
|
429 |
istitle(s) |
430 |
|
431 |
char *s; |
432 |
|
433 |
{ |
434 |
char word[32]; |
435 |
|
436 |
if (sscanf(s, "%10s", word) == 1) |
437 |
return strcmp(word, "title") == 0; |
438 |
else |
439 |
return 0; |
440 |
} |
441 |
|
442 |
|
443 |
|
444 |
|
445 |
isdivlab(s) /* return TRUE if division label(s) */ |
446 |
|
447 |
register char *s; |
448 |
|
449 |
{ |
450 |
|
451 |
return(instr(s, "division") != NULL); |
452 |
} |
453 |
|
454 |
|
455 |
|
456 |
|
457 |
isxlabel(s) |
458 |
|
459 |
register char *s; |
460 |
|
461 |
{ |
462 |
register char *xindex = instr(s, "x "); |
463 |
|
464 |
return(xindex != NULL && instr(xindex, "label ") != NULL); |
465 |
} |
466 |
|
467 |
|
468 |
|
469 |
|
470 |
isylabel(s) |
471 |
|
472 |
register char *s; |
473 |
|
474 |
{ |
475 |
register char *yindex = instr(s, "y "); |
476 |
|
477 |
return(yindex != NULL && instr(yindex, "label ") != NULL); |
478 |
} |
479 |
|
480 |
|
481 |
|
482 |
char * |
483 |
instr(s, t) /* return pointer to first occurrence of t in s */ |
484 |
|
485 |
char *s, |
486 |
*t; |
487 |
|
488 |
{ |
489 |
register char *pt, *ps; |
490 |
|
491 |
do { |
492 |
|
493 |
ps = s; |
494 |
pt = t; |
495 |
|
496 |
while (*pt && *pt == *ps++) |
497 |
pt++; |
498 |
|
499 |
if (*pt == '\0') |
500 |
return(s); |
501 |
|
502 |
} while (*s++); |
503 |
|
504 |
return(NULL); |
505 |
} |
506 |
|
507 |
|
508 |
|
509 |
|
510 |
char * |
511 |
snagquo(s) /* find and return quoted string within s */ |
512 |
|
513 |
register char *s; |
514 |
|
515 |
{ |
516 |
register char *rval = NULL; |
517 |
|
518 |
for ( ; *s; s++) |
519 |
if (*s == '"') |
520 |
if (rval == NULL) |
521 |
rval = s+1; |
522 |
else { |
523 |
*s = '\0'; |
524 |
return(rval); |
525 |
} |
526 |
|
527 |
return(NULL); |
528 |
} |
529 |
|
530 |
|
531 |
|
532 |
|
533 |
getdata(s, xp, yp) /* get data from line */ |
534 |
|
535 |
char *s; |
536 |
double *xp, *yp; |
537 |
|
538 |
{ |
539 |
double sin(), cos(); |
540 |
int oobounds = 0; |
541 |
double a; |
542 |
register char *cp; |
543 |
|
544 |
if ((cp = strchr(s, ',')) != NULL) |
545 |
*cp = ' '; |
546 |
|
547 |
if (sscanf(s, "%lf %lf", xp, yp) != 2) |
548 |
return(-1); |
549 |
|
550 |
if (*xp < xmnset || *xp > xmxset) |
551 |
oobounds++; |
552 |
if (*yp < ymnset || *yp > ymxset) |
553 |
oobounds++; |
554 |
|
555 |
if (logx) |
556 |
if (*xp < FTINY) |
557 |
oobounds++; |
558 |
else |
559 |
*xp = log10(*xp); |
560 |
|
561 |
if (logy) |
562 |
if (*yp < FTINY) |
563 |
oobounds++; |
564 |
else |
565 |
*yp = log10(*yp); |
566 |
|
567 |
if (polar) { |
568 |
a = *xp; |
569 |
if (polar == DEGREES) |
570 |
a *= PI/180.0; |
571 |
*xp = *yp * cos(a); |
572 |
*yp *= sin(a); |
573 |
} |
574 |
|
575 |
return(oobounds ? -1 : 0); |
576 |
} |
577 |
|
578 |
|
579 |
|
580 |
|
581 |
symout(a0, x, y, sname) /* output a symbol */ |
582 |
|
583 |
int a0; |
584 |
int x, y; |
585 |
char *sname; |
586 |
|
587 |
{ |
588 |
|
589 |
pprim(PSEG, a0, x-symrad, y-symrad, x+symrad, y+symrad, sname); |
590 |
|
591 |
} |
592 |
|
593 |
|
594 |
|
595 |
boxstring(a0, xmn, ymn, xmx, ymx, s) /* output a string within a box */ |
596 |
|
597 |
int a0; |
598 |
int xmn, ymn, xmx, ymx; |
599 |
char *s; |
600 |
|
601 |
{ |
602 |
int start; |
603 |
long size; |
604 |
|
605 |
if (a0 & 020) { /* up or down */ |
606 |
|
607 |
size = (long)strlen(s)*(xmx-xmn)*2/3; /* aspect ratio is 1.5 */ |
608 |
|
609 |
if (size > ymx-ymn) { |
610 |
size = ymx-ymn; /* squash it */ |
611 |
start = ymn; |
612 |
} else |
613 |
start = (ymx-ymn-(int)size)/2 + ymn; /* center it */ |
614 |
|
615 |
pprim(PVSTR, a0, xmn, start, xmx, start+(int)size, s); |
616 |
|
617 |
} else { /* right or left */ |
618 |
|
619 |
size = (long)strlen(s)*(ymx-ymn)*2/3; /* aspect ratio is 1.5 */ |
620 |
|
621 |
if (size > xmx-xmn) { |
622 |
size = xmx-xmn; /* squash it */ |
623 |
start = xmn; |
624 |
} else |
625 |
start = (xmx-xmn-(int)size)/2 + xmn; /* center it */ |
626 |
|
627 |
pprim(PVSTR, a0, start, ymn, start+(int)size, ymx, s); |
628 |
|
629 |
} |
630 |
|
631 |
} |