| 1 |
#ifndef lint
|
| 2 |
static const char RCSid[] = "$Id$";
|
| 3 |
#endif
|
| 4 |
/*
|
| 5 |
* gcalc.c - routines to do calculations on graph files.
|
| 6 |
*
|
| 7 |
* 7/7/86
|
| 8 |
* Greg Ward Larson
|
| 9 |
*/
|
| 10 |
|
| 11 |
#include <stdio.h>
|
| 12 |
|
| 13 |
#include "mgvars.h"
|
| 14 |
|
| 15 |
#ifndef BSD
|
| 16 |
#define index strchr
|
| 17 |
#endif
|
| 18 |
|
| 19 |
extern char *index();
|
| 20 |
|
| 21 |
static double xsum, xxsum, ysum, yysum, xysum;
|
| 22 |
static double xmin, xmax, ymin, ymax;
|
| 23 |
static double lastx, lasty, rsum;
|
| 24 |
static int npts;
|
| 25 |
|
| 26 |
|
| 27 |
gcalc(types) /* do a calculation */
|
| 28 |
char *types;
|
| 29 |
{
|
| 30 |
int i, calcpoint();
|
| 31 |
|
| 32 |
if (index(types, 'h') == NULL)
|
| 33 |
gcheader(types);
|
| 34 |
|
| 35 |
xmin = gparam[XMIN].flags & DEFINED ?
|
| 36 |
varvalue(gparam[XMIN].name) :
|
| 37 |
-1e10;
|
| 38 |
xmax = gparam[XMAX].flags & DEFINED ?
|
| 39 |
varvalue(gparam[XMAX].name) :
|
| 40 |
1e10;
|
| 41 |
|
| 42 |
for (i = 0; i < MAXCUR; i++) {
|
| 43 |
xsum = xxsum = ysum = yysum = xysum = 0.0;
|
| 44 |
rsum = 0.0;
|
| 45 |
npts = 0;
|
| 46 |
mgcurve(i, calcpoint);
|
| 47 |
gcvalue(i, types);
|
| 48 |
}
|
| 49 |
}
|
| 50 |
|
| 51 |
|
| 52 |
gcheader(types) /* print header */
|
| 53 |
register char *types;
|
| 54 |
{
|
| 55 |
printf("__");
|
| 56 |
while (*types)
|
| 57 |
switch (*types++) {
|
| 58 |
case 'n':
|
| 59 |
printf("|_Label___________");
|
| 60 |
break;
|
| 61 |
case 'a':
|
| 62 |
printf("|____Mean______S.D._");
|
| 63 |
break;
|
| 64 |
case 'm':
|
| 65 |
printf("|_____Min_______Max_");
|
| 66 |
break;
|
| 67 |
case 'i':
|
| 68 |
printf("|___Integ_");
|
| 69 |
break;
|
| 70 |
case 'l':
|
| 71 |
printf("|___Slope_____Intcp______Corr_");
|
| 72 |
break;
|
| 73 |
default:
|
| 74 |
break;
|
| 75 |
}
|
| 76 |
printf("\n");
|
| 77 |
}
|
| 78 |
|
| 79 |
|
| 80 |
gcvalue(c, types) /* print the values for the curve */
|
| 81 |
int c;
|
| 82 |
register char *types;
|
| 83 |
{
|
| 84 |
double d1, d2, d3, sqrt();
|
| 85 |
|
| 86 |
if (npts < 1)
|
| 87 |
return;
|
| 88 |
|
| 89 |
printf("%c:", c+'A');
|
| 90 |
while (*types)
|
| 91 |
switch (*types++) {
|
| 92 |
case 'n':
|
| 93 |
printf(" %-16s", cparam[c][CLABEL].flags & DEFINED ?
|
| 94 |
cparam[c][CLABEL].v.s : "");
|
| 95 |
break;
|
| 96 |
case 'a':
|
| 97 |
d1 = sqrt((yysum - ysum*ysum/npts)/(npts-1));
|
| 98 |
printf(" %9.2f %9.3f", ysum/npts, d1);
|
| 99 |
break;
|
| 100 |
case 'm':
|
| 101 |
printf(" %9.2f %9.2f", ymin, ymax);
|
| 102 |
break;
|
| 103 |
case 'i':
|
| 104 |
printf(" %9.2f", rsum);
|
| 105 |
break;
|
| 106 |
case 'l':
|
| 107 |
d3 = xxsum - xsum*xsum/npts;
|
| 108 |
d1 = (xysum - xsum*ysum/npts)/d3;
|
| 109 |
d2 = (ysum - d1*xsum)/npts;
|
| 110 |
d3 = d1*sqrt(d3/(yysum - ysum*ysum/npts));
|
| 111 |
printf(" %9.5f %9.2f %9.5f", d1, d2, d3);
|
| 112 |
break;
|
| 113 |
default:
|
| 114 |
break;
|
| 115 |
}
|
| 116 |
printf("\n");
|
| 117 |
}
|
| 118 |
|
| 119 |
|
| 120 |
calcpoint(c, x, y) /* add a point to our calculation */
|
| 121 |
int c;
|
| 122 |
double x, y;
|
| 123 |
{
|
| 124 |
if (x < xmin || x > xmax)
|
| 125 |
return;
|
| 126 |
|
| 127 |
xsum += x;
|
| 128 |
xxsum += x*x;
|
| 129 |
ysum += y;
|
| 130 |
yysum += y*y;
|
| 131 |
xysum += x*y;
|
| 132 |
|
| 133 |
if (npts) {
|
| 134 |
if (y < ymin)
|
| 135 |
ymin = y;
|
| 136 |
else if (y > ymax)
|
| 137 |
ymax = y;
|
| 138 |
} else
|
| 139 |
ymin = ymax = y;
|
| 140 |
|
| 141 |
if (npts)
|
| 142 |
rsum += ( y + lasty )*( x - lastx )/2.0;
|
| 143 |
lastx = x;
|
| 144 |
lasty = y;
|
| 145 |
|
| 146 |
npts++;
|
| 147 |
}
|
