src/cal/histo.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 * Compute a histogram from input data
 *
 *      9/5/96  Greg Ward
 */

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>

#define MAXCOL          64              /* maximum number of input columns */
#define MAXDIV          1024

#define isint(x)        (floor((x)+1e-6) != floor((x)-1e-6))

char    *progname;

int     cumulative = 0;

long    histo[MAXCOL][MAXDIV];
double  minv, maxv;
int     ndiv;

int     ncols;


main(argc, argv)
int     argc;
char    *argv[];
{
        progname = argv[0];
        if (argc > 1 && !strcmp(argv[1], "-c")) {
                cumulative++;
                argc--; argv++;
        }
        if (argc < 3)
                goto userr;
        minv = atof(argv[1]);
        maxv = atof(argv[2]);
        if (argc == 4)
                ndiv = atoi(argv[3]);
        else {
                if (argc > 4 || !isint(minv) || !isint(maxv))
                        goto userr;
                maxv += 0.5;
                minv -= 0.5;
                ndiv = maxv - minv + 0.5;
        }
        if (minv >= maxv | ndiv <= 0)
                goto userr;
        if (ndiv > MAXDIV) {
                fprintf(stderr, "%s: maximum number of divisions: %d\n",
                                progname, MAXDIV);
                goto userr;
        }
        readinp();
        if (cumulative)
                printcumul();
        else
                printhisto();
        exit(0);
userr:
        fprintf(stderr, "Usage: %s [-c] min max n\n", progname);
        fprintf(stderr, "   Or: %s [-c] imin imax\n", progname);
        exit(1);
}


readinp()                       /* gather statistics on input */
{
        char    buf[16*MAXCOL];
        double  d;
        register int    c;
        register char   *cp;

        while ((cp = fgets(buf, sizeof(buf), stdin)) != NULL) {
                for (c = 0; c < MAXCOL; c++) {
                        while (isspace(*cp))
                                cp++;
                        if (!*cp)
                                break;
                        d = atof(cp);
                        while (*cp && !isspace(*cp))
                                cp++;
                        if (d >= minv && d < maxv)
                                histo[c][(int)(ndiv*(d-minv)/(maxv-minv))]++;
                }
                if (c > ncols)
                        ncols = c;
        }
}


printcumul()                    /* print cumulative histogram results */
{
        long            ctot[MAXCOL];
        register int    i, c;

        for (c = ncols; c--; )
                ctot[c] = 0L;

        for (i = 0; i < ndiv; i++) {
                printf("%g", minv + (maxv-minv)*(i+1)/ndiv);
                for (c = 0; c < ncols; c++) {
                        ctot[c] += histo[c][i];
                        printf("\t%ld", ctot[c]);
                }
                putchar('\n');
        }
}


printhisto()                    /* print histogram results */
{
        register int    i, c;

        for (i = 0; i < ndiv; i++) {
                printf("%g", minv + (maxv-minv)*(i+.5)/ndiv);
                for (c = 0; c < ncols; c++)
                        printf("\t%ld", histo[c][i]);
                putchar('\n');
        }
}
Revision:	1.1
Committed:	Sat Feb 22 02:07:20 2003 UTC (21 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2			static const char RCSid[] = "$Id$";
3			#endif
4			/*
5			* Compute a histogram from input data
6			*
7			* 9/5/96 Greg Ward
8			*/
9
10			#include <stdio.h>
11			#include <stdlib.h>
12			#include <math.h>
13			#include <ctype.h>
14
15			#define MAXCOL 64 /* maximum number of input columns */
16			#define MAXDIV 1024
17
18			#define isint(x) (floor((x)+1e-6) != floor((x)-1e-6))
19
20			char *progname;
21
22			int cumulative = 0;
23
24			long histo[MAXCOL][MAXDIV];
25			double minv, maxv;
26			int ndiv;
27
28			int ncols;
29
30
31			main(argc, argv)
32			int argc;
33			char *argv[];
34			{
35			progname = argv[0];
36			if (argc > 1 && !strcmp(argv[1], "-c")) {
37			cumulative++;
38			argc--; argv++;
39			}
40			if (argc < 3)
41			goto userr;
42			minv = atof(argv[1]);
43			maxv = atof(argv[2]);
44			if (argc == 4)
45			ndiv = atoi(argv[3]);
46			else {
47			if (argc > 4 \|\| !isint(minv) \|\| !isint(maxv))
48			goto userr;
49			maxv += 0.5;
50			minv -= 0.5;
51			ndiv = maxv - minv + 0.5;
52			}
53			if (minv >= maxv \| ndiv <= 0)
54			goto userr;
55			if (ndiv > MAXDIV) {
56			fprintf(stderr, "%s: maximum number of divisions: %d\n",
57			progname, MAXDIV);
58			goto userr;
59			}
60			readinp();
61			if (cumulative)
62			printcumul();
63			else
64			printhisto();
65			exit(0);
66			userr:
67			fprintf(stderr, "Usage: %s [-c] min max n\n", progname);
68			fprintf(stderr, " Or: %s [-c] imin imax\n", progname);
69			exit(1);
70			}
71
72
73			readinp() /* gather statistics on input */
74			{
75			char buf[16*MAXCOL];
76			double d;
77			register int c;
78			register char *cp;
79
80			while ((cp = fgets(buf, sizeof(buf), stdin)) != NULL) {
81			for (c = 0; c < MAXCOL; c++) {
82			while (isspace(*cp))
83			cp++;
84			if (!*cp)
85			break;
86			d = atof(cp);
87			while (cp && !isspace(cp))
88			cp++;
89			if (d >= minv && d < maxv)
90			histo[c][(int)(ndiv*(d-minv)/(maxv-minv))]++;
91			}
92			if (c > ncols)
93			ncols = c;
94			}
95			}
96
97
98			printcumul() /* print cumulative histogram results */
99			{
100			long ctot[MAXCOL];
101			register int i, c;
102
103			for (c = ncols; c--; )
104			ctot[c] = 0L;
105
106			for (i = 0; i < ndiv; i++) {
107			printf("%g", minv + (maxv-minv)*(i+1)/ndiv);
108			for (c = 0; c < ncols; c++) {
109			ctot[c] += histo[c][i];
110			printf("\t%ld", ctot[c]);
111			}
112			putchar('\n');
113			}
114			}
115
116
117			printhisto() /* print histogram results */
118			{
119			register int i, c;
120
121			for (i = 0; i < ndiv; i++) {
122			printf("%g", minv + (maxv-minv)*(i+.5)/ndiv);
123			for (c = 0; c < ncols; c++)
124			printf("\t%ld", histo[c][i]);
125			putchar('\n');
126			}
127			}