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greg |
1.1 |
#ifndef lint |
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schorsch |
1.2 |
static const char RCSid[] = "$Id: tgraph.c,v 1.1 2003/02/22 02:07:26 greg Exp $"; |
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greg |
1.1 |
#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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schorsch |
1.2 |
#include <ctype.h> |
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#include <string.h> |
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greg |
1.1 |
#include "tgraph.h" |
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#define isfloat(a) (isdigit(a) || (a) == '-' || (a) == '.' || \ |
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(a) == 'E' || (a) == '+' || (a) == 'e') |
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extern double log10(); |
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initialize() |
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{ |
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int i; |
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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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option(s) /* record option */ |
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char *s; |
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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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if (s[0] == '-') |
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switch(s[1]) { |
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case 'x': |
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xmnset = atof(s+2); |
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break; |
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case 'y': |
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ymnset = atof(s+2); |
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break; |
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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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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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case 'g': /* grid on */ |
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grid = TRUE; |
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break; |
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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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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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switch (s[1]) { |
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case 'x': |
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xmxset = atof(s+2); |
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break; |
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case 'y': |
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ymxset = atof(s+2); |
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break; |
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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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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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normalize(fp, fout) /* get extrema from file */ |
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FILE *fp, *fout; |
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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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ncurves = 0; |
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xmin = ymin = FHUGE; |
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xmax = ymax = -FHUGE; |
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while (fgets(line, sizeof line, fp) != NULL) { |
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if (fout != NULL) |
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fputs(line, fout); |
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if (islabel(line)) |
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ncurves++; |
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else if (ncurves < NCUR && usecurve[ncurves] && isdata(line)) { |
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| 147 |
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if (getdata(line, &x, &y) < 0) |
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continue; |
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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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npoints++; |
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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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makeaxis(flag) /* make and print x and y axis */ |
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int flag; |
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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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/* 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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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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xsize = xmax - xmin; |
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ysize = ymax - ymin; |
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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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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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#if CPM || MAC |
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if (xstep > 1.0) |
| 265 |
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format = "%5.0f"; |
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else |
| 267 |
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format = "%5.3f"; |
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#else |
| 269 |
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format = "%5g"; |
| 270 |
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#endif |
| 271 |
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if (logx) |
| 272 |
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format = "1e%-3.0f"; |
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| 274 |
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for (pos = xmin; pos < xmax+xstep/2; pos += xstep) { |
| 275 |
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if (flag & XTICS) |
| 276 |
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if (polar) |
| 277 |
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plseg(010, XCONV(pos), yorg-TSIZ/2, XCONV(pos), yorg+TSIZ/2); |
| 278 |
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else { |
| 279 |
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plseg(010, XCONV(pos), YBEG, XCONV(pos), YBEG-TSIZ); |
| 280 |
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plseg(010, XCONV(pos), YBEG+YSIZ-1, XCONV(pos), YBEG+YSIZ-1+TSIZ); |
| 281 |
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} |
| 282 |
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if (flag & XNUMS) { |
| 283 |
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sprintf(stemp, format, pos); |
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if (polar) |
| 285 |
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pprim(PMSTR, 020, XCONV(pos)-600, yorg-TSIZ-150, |
| 286 |
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XCONV(pos)-600, yorg-TSIZ-150, stemp); |
| 287 |
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else |
| 288 |
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pprim(PMSTR, 020, XCONV(pos)-600, YBEG-2*TSIZ-150, |
| 289 |
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XCONV(pos)-600, YBEG-2*TSIZ-150, stemp); |
| 290 |
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} |
| 291 |
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if (flag & XGRID) |
| 292 |
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plseg(040, XCONV(pos), YBEG, XCONV(pos), YBEG+YSIZ-1); |
| 293 |
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} |
| 294 |
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/* make y-axis */ |
| 295 |
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if (flag & BOX) { |
| 296 |
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plseg(010, XBEG, YBEG, XBEG, YBEG+YSIZ-1); |
| 297 |
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plseg(010, XBEG+XSIZ-1, YBEG, XBEG+XSIZ-1, YBEG+YSIZ-1); |
| 298 |
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} |
| 299 |
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if (flag & ORIGIN) |
| 300 |
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plseg(010, xorg, YBEG, xorg, YBEG+YSIZ-1); |
| 301 |
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| 302 |
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#if CPM || MAC |
| 303 |
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if (ystep > 1.0) |
| 304 |
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format = "%5.0f"; |
| 305 |
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else |
| 306 |
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format = "%5.3f"; |
| 307 |
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#else |
| 308 |
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format = "%5g"; |
| 309 |
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#endif |
| 310 |
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if (logy) |
| 311 |
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format = "1e%-3.0f"; |
| 312 |
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| 313 |
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for (pos = ymin; pos < ymax+ystep/2; pos += ystep) { |
| 314 |
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if (flag & YTICS) |
| 315 |
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if (polar) |
| 316 |
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plseg(010, xorg-TSIZ/2, YCONV(pos), xorg+TSIZ/2, YCONV(pos)); |
| 317 |
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else { |
| 318 |
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plseg(010, XBEG, YCONV(pos), XBEG-TSIZ, YCONV(pos)); |
| 319 |
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plseg(010, XBEG+XSIZ-1, YCONV(pos), XBEG+XSIZ-1+TSIZ, YCONV(pos)); |
| 320 |
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} |
| 321 |
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if (flag & YNUMS) { |
| 322 |
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sprintf(stemp, format, pos); |
| 323 |
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if (polar) |
| 324 |
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pprim(PMSTR, 020, xorg-TSIZ-900, YCONV(pos)+32, |
| 325 |
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xorg-TSIZ-900, YCONV(pos)+32, stemp); |
| 326 |
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else |
| 327 |
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pprim(PMSTR, 020, XBEG-2*TSIZ-900, YCONV(pos)+32, |
| 328 |
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XBEG-2*TSIZ-900, YCONV(pos)+32, stemp); |
| 329 |
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} |
| 330 |
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if (flag & YGRID) |
| 331 |
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plseg(040, XBEG, YCONV(pos), XBEG+XSIZ-1, YCONV(pos)); |
| 332 |
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} |
| 333 |
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| 334 |
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} |
| 335 |
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| 336 |
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| 337 |
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| 338 |
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isdata(s) |
| 339 |
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| 340 |
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register char *s; |
| 341 |
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| 342 |
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{ |
| 343 |
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int commas = 0; |
| 344 |
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| 345 |
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while (*s) |
| 346 |
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if (isfloat(*s) || isspace(*s)) |
| 347 |
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s++; |
| 348 |
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else if (*s == ',') { |
| 349 |
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commas++; |
| 350 |
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s++; |
| 351 |
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} |
| 352 |
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else |
| 353 |
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return 0; |
| 354 |
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| 355 |
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return commas <= 1; |
| 356 |
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} |
| 357 |
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| 358 |
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| 359 |
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| 360 |
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| 361 |
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islabel(s) |
| 362 |
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| 363 |
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char s[]; |
| 364 |
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| 365 |
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{ |
| 366 |
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int i; |
| 367 |
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| 368 |
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i = strlen(s) - 2; |
| 369 |
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| 370 |
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return(i > 0 && s[0] == '"' && s[i] == '"'); |
| 371 |
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} |
| 372 |
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| 373 |
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| 374 |
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| 375 |
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| 376 |
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double |
| 377 |
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step(mn, mx) /* compute step size for axis */ |
| 378 |
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| 379 |
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double *mn, *mx; |
| 380 |
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| 381 |
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{ |
| 382 |
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static int steps[] = {100, 50, 20, 10, 5, 2, 1}; |
| 383 |
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int i; |
| 384 |
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double fact, stp; |
| 385 |
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double pown(), floor(), ceil(); |
| 386 |
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| 387 |
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if (*mx-*mn <= FTINY) { |
| 388 |
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stp = 1.0; |
| 389 |
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} |
| 390 |
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else { |
| 391 |
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fact = pown(10.0, (int)log10(*mx-*mn)-2); |
| 392 |
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stp = (*mx-*mn)/fact/MINDIVS; |
| 393 |
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| 394 |
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for (i = 0; stp < steps[i]; i++); |
| 395 |
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stp = steps[i]*fact; |
| 396 |
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} |
| 397 |
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| 398 |
|
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*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 |
schorsch |
1.2 |
if ((cp = strchr(s, ',')) != NULL) |
| 545 |
greg |
1.1 |
*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 |
|
|
} |
