geopyspark.geotrellis.hillshade module¶
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geopyspark.geotrellis.hillshade.
hillshade
(tiled_raster_layer, band=0, azimuth=315.0, altitude=45.0, z_factor=1.0)¶ Computes Hillshade (shaded relief) from a raster.
The resulting raster will be a shaded relief map (a hill shading) based on the sun altitude, azimuth, and the z factor. The z factor is a conversion factor from map units to elevation units.
Returns a raster of ShortConstantNoDataCellType.
For descriptions of parameters, please see Esri Desktop’s description of Hillshade.
Parameters: - tiled_raster_layer (
TiledRasterLayer
) – The base layer that contains the rasters used to compute the hillshade. - band (int, optional) – The band of the raster to base the hillshade calculation on. Default is 0.
- azimuth (float, optional) – The azimuth angle of the source of light. Default value is 315.0.
- altitude (float, optional) – The angle of the altitude of the light above the horizon. Default is 45.0.
- z_factor (float, optional) – How many x and y units in a single z unit. Default value is 1.0.
Returns: - tiled_raster_layer (