rt_raster_new()

rt_raster rt_raster_new	(	uint32_t	width,
		uint32_t	height
	)

Construct a raster with given dimensions.

Transform will be set to identity. Will contain no bands.

Parameters

width	: number of pixel columns
height	: number of pixel rows

Returns

an rt_raster or NULL if out of memory

Definition at line 48 of file rt_raster.c.

References rt_raster_t::bands, rt_raster_t::height, rt_raster_t::ipX, rt_raster_t::ipY, rt_raster_t::numBands, RASTER_DEBUGF, rt_raster_destroy(), rtalloc(), rterror(), rt_raster_t::scaleX, rt_raster_t::scaleY, rt_raster_t::skewX, rt_raster_t::skewY, rt_raster_t::srid, SRID_UNKNOWN, and rt_raster_t::width.

Referenced by convert_raster(), diff_rastinfo(), fillRasterToPolygonize(), RASTER_addBandOutDB(), RASTER_asRaster(), RASTER_clip(), RASTER_makeEmpty(), RASTER_mapAlgebra2(), RASTER_mapAlgebraExpr(), RASTER_mapAlgebraFct(), RASTER_mapAlgebraFctNgb(), RASTER_nMapAlgebra(), RASTER_nMapAlgebraExpr(), RASTER_tile(), rt_band_load_offline_data(), rt_raster_clone(), rt_raster_compute_skewed_raster(), rt_raster_from_band(), rt_raster_from_gdal_dataset(), rt_raster_from_two_rasters(), rt_raster_gdal_rasterize(), rt_raster_gdal_warp(), rt_raster_iterator(), test_band_get_nearest_pixel(), test_band_get_pixel_line(), test_band_get_pixel_of_value(), test_band_metadata(), test_band_reclass(), test_band_stats(), test_band_value_count(), test_gdal_to_raster(), test_gdal_warp(), test_pixel_set_to_array(), test_raster_cell_to_geopoint(), test_raster_clone(), test_raster_colormap(), test_raster_convex_hull(), test_raster_empty(), test_raster_envelope(), test_raster_envelope_geom(), test_raster_from_band(), test_raster_from_two_rasters(), test_raster_fully_within_distance(), test_raster_geopoint_to_cell(), test_raster_geos_contains(), test_raster_geos_contains_properly(), test_raster_geos_covered_by(), test_raster_geos_covers(), test_raster_geos_overlaps(), test_raster_geos_touches(), test_raster_intersects(), test_raster_iterator(), test_raster_metadata(), test_raster_new(), test_raster_perimeter(), test_raster_pixel_as_polygon(), test_raster_replace_band(), test_raster_same_alignment(), test_raster_surface(), test_raster_to_gdal(), and test_raster_within_distance().

                                               {
        rt_raster ret = NULL;

        ret = (rt_raster) rtalloc(sizeof (struct rt_raster_t));
        if (!ret) {
                rterror("rt_raster_new: Out of virtual memory creating an rt_raster");
                return NULL;
        }

        RASTER_DEBUGF(3, "Created rt_raster @ %p", ret);

        if (width > 65535 || height > 65535) {
                rterror("rt_raster_new: Dimensions requested exceed the maximum (65535 x 65535) permitted for a raster");
                rt_raster_destroy(ret);
                return NULL;
        }

        ret->width = width;
        ret->height = height;
        ret->scaleX = 1;
        ret->scaleY = -1;
        ret->ipX = 0.0;
        ret->ipY = 0.0;
        ret->skewX = 0.0;
        ret->skewY = 0.0;
        ret->srid = SRID_UNKNOWN;

        ret->numBands = 0;
        ret->bands = NULL;

        return ret;
}

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