Contour Creator ER HeightMap Will need destructuror (1.0, 0.0, 0.0, 1.0, 213.89827124049944, 137.04296875) (0.0, 0.0) 311.0 151.0 0 width int height int Cell (1.0, 0.0, 0.0, 1.0, 567.9247472572557, 154.04296875) (0.0, 0.0) 311.0 117.0 0 width int height int + cells: int* min float max float + data: float* OGRSpatialReference reference_system OGRSpatialReference reference_system