int main(int argc, char** argv) {
  

  if (argc < 2) {
    printf("Usage: %s grid-name [-c color-grid]\n", argv[0]);
    return 0;
  }

  Grid alt, col;
  
  switch (gopen(&alt, argv[1])) {
  case 0:
    printf("File %s opened successfully\n", argv[1]);
    break;
  default:
    printf("Error opening file");
    return 0;
    break;
  }

  col = alt;

  if (argc > 2) {
    if (strcmp(argv[2],"-c") == 0) {
      switch (gopen(&col, argv[3])) {
      case 0:
	printf("File %s opened successfully\n", argv[3]);
	break;
      default:
	printf("Error opening file");
	return 0;
	break;
      }
    }
  }

  float mult = 1;

  /*
  if (alt.cellsize > 1)
    mult = 1. / alt.cellsize;
  else
    mult = alt.cellsize;

  printf("%f\n",alt.cellsize);
  */

  visualize(alt, col, 0, mult);
   
  return 0;
}