90 lines
1.8 KiB
C++
90 lines
1.8 KiB
C++
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#define MAX_GRID_POINTS 16000
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#define GRID_FORMAT "%lf %lf %f %lf"
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void printresult_withalt(double* longitudes, double* latitudes, float* altitudes, double* values, int n_values)
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{
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for (int h = 0; h < n_values; h++)
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printf( "%lf %lf %f %lf\n", longitudes[h], latitudes[h], altitudes[h], values[h]);
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return;
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}
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void printresult(double* longitudes, double* latitudes, double* values, int n_values)
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{
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for (int h = 0; h < n_values; h++)
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printf( "%lf %lf %lf\n", longitudes[h], latitudes[h], values[h]);
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return;
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}
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int main(int argc, char**argv)
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{
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int n_files = (argc-1)/2;
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double lons[MAX_GRID_POINTS];
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double lats[MAX_GRID_POINTS];
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float alts[MAX_GRID_POINTS];
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double vals[MAX_GRID_POINTS];
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double factor = 1;
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char * line = NULL;
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size_t len = 0;
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ssize_t read;
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int n_lines = 0;
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for (int i = 0; i < n_files; i++)
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{
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FILE * fp = fopen(argv[1+2*i], "r");
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sscanf(argv[1+2*i+1], "%lf", &factor);
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if (fp == NULL)
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{
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printf("ERROR: Can not open file with grid values.\n");
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exit(EXIT_FAILURE);
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}
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n_lines = 0;
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while ((read = getline(&line, &len, fp )) != -1)
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{
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if ((line[0] != '#') && (strlen(line) > 2))
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{
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n_lines++;
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if (n_lines>MAX_GRID_POINTS)
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{
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printf("ERROR: Too many grid points (> %d) in the input. Recompile program with a bigger value of MAX_GRID_POINTS.\n", n_lines);
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exit(EXIT_FAILURE);
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}
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double value;
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sscanf(line, GRID_FORMAT, &lons[n_lines-1], &lats[n_lines-1], &alts[n_lines-1], &value);
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vals[n_lines-1] = vals[n_lines-1] + value*factor;
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}
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}
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fclose(fp);
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}
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int no_alt = 0;
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if (no_alt)
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printresult(lons, lats, vals, n_lines);
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else
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printresult_withalt(lons, lats, alts, vals, n_lines);
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}
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