OptionaloutputDefines the pixel type of the output image.
OptionalrasterThe raster function name identifies the processing or rendering to be performed. See http://resources.arcgis.com/en/help/arcgis-rest-api/#/Raster_Function_Objects/02r3000000rv000000/.
OptionalrasterThe arguments for the referenced rasterFunction.
OptionalvariableVariable name for the raster function.
Specifies the rendering rule for how the requested image should be rendered.
See https://developers.arcgis.com/web-map-specification/objects/renderingRule/ https://developers.arcgis.com/web-scene-specification/objects/renderingRule/.