load_frame.c

#include <stdio.h>

struct rec {
    float x;
};

const long n_pixels = 1475;
const long n_rasters = 1679;

float data[1679][1475];

int main() {
    int frame = 0;
    int raster;
    int pixel;
    FILE *my_file;
    struct rec my_record;
    char filename[50];
    FILE *save_file;

    my_file = fopen("multi_data/B12001.629", "rb");

    if (!my_file) {
        printf("Unable to open input file");
        return 1;
    }

    sprintf(filename, "multi_data/export/frame%d.txt", frame);
    save_file = fopen(filename, "w");
    if (!save_file) {
        printf("Unable to open save file: %s", filename);
        return 1;
    }
    for (raster = 0; raster < n_rasters; raster++) {
        for (pixel = 0; pixel < n_pixels; pixel++) {
            fread(&my_record, sizeof(struct rec), 1, my_file);
            data[raster][pixel] = my_record.x;
            fprintf(save_file, "%.2e ", my_record.x);
        }
        fprintf(save_file, "\n");
    }
    printf("%s\n", filename);
    fclose(save_file);

    fclose(my_file);

    return 0;
}