GRASS GIS 8 Programmer's Manual 8.4.1(2025)-45ca3179ab
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c_ave.c
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1#include <grass/gis.h>
2#include <grass/raster.h>
3
4void c_ave(DCELL *result, DCELL *values, int n, const void *closure UNUSED)
5{
6 DCELL sum;
7 int count;
8 int i;
9
10 sum = 0.0;
11 count = 0;
12
13 for (i = 0; i < n; i++) {
14 if (Rast_is_d_null_value(&values[i]))
15 continue;
16
17 sum += values[i];
18 count++;
19 }
20
21 if (count == 0)
22 Rast_set_d_null_value(result, 1);
23 else
24 *result = sum / count;
25}
26
27void w_ave(DCELL *result, DCELL (*values)[2], int n, const void *closure UNUSED)
28{
29 DCELL sum;
30 DCELL count;
31 int i;
32
33 sum = 0.0;
34 count = 0.0;
35
36 for (i = 0; i < n; i++) {
37 if (Rast_is_d_null_value(&values[i][0]))
38 continue;
39
40 sum += values[i][0] * values[i][1];
41 count += values[i][1];
42 }
43
44 if (count == 0)
45 Rast_set_d_null_value(result, 1);
46 else
47 *result = sum / count;
48}
void w_ave(DCELL *result, DCELL(*values)[2], int n, const void *closure UNUSED)
Definition c_ave.c:27
void c_ave(DCELL *result, DCELL *values, int n, const void *closure UNUSED)
Definition c_ave.c:4
int count