rt_raster_get_inverse_geotransform_matrix()

rt_errorstate rt_raster_get_inverse_geotransform_matrix	(	rt_raster	raster,
		double *	gt,
		double *	igt
	)

Get 6-element array of raster inverse geotransform matrix.

Parameters

raster	: the raster to get matrix of
gt	: optional input parameter, 6-element geotransform matrix
igt	: output parameter, 6-element inverse geotransform matrix

Returns

ES_NONE if success, ES_ERROR if error

Definition at line 676 of file rt_raster.c.

References ES_ERROR, ES_NONE, rt_raster_get_geotransform_matrix(), and rterror().

Referenced by RASTER_setPixelValuesGeomval(), and rt_raster_geopoint_to_cell().

  {
        double _gt[6] = {0};

        assert((raster != NULL || gt != NULL));
        assert(igt != NULL);

        if (gt == NULL)
                rt_raster_get_geotransform_matrix(raster, _gt);
        else
                memcpy(_gt, gt, sizeof(double) * 6);

        if (!GDALInvGeoTransform(_gt, igt)) {
                rterror("rt_raster_get_inverse_geotransform_matrix: Could not compute inverse geotransform matrix");
                return ES_ERROR;
        }

        return ES_NONE;
}

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