var remapRF = new RasterFunction();
remapRF.functionName = "Remap";
remapRF.functionArguments = {
  InputRanges: [-3,10,11,37], // remap pixels with values -3 to 10 to now have value of 1
  OutputValues: [1,2],        // remap pixel values from 11 to 37 to have a value of 2
  Raster: "$$"  // Apply remap to the image service
};
remapRF.outputPixelType = "u8";

var colorRF = new RasterFunction();
colorRF.functionName = "Colormap";
colorRF.functionArguments = {
  Colormap: [
    [1, 255, 0, 0],  // Symbolize pixels with value of 1 using red color
    [2, 0, 255, 0]   // Symbolize pixels with value of 2 using green color
  ],
  Raster : remapRF  // Apply Colormap to output raster from the remap rasterFunction
};

imageLayer.renderingRule = colorRF; // Set rendering rule to final raster function

Property Overview

Property Details

declaredClassStringreadonly inherited

Since: ArcGIS API for JavaScript 4.7

The name of the class. The declared class name is formatted as esri.folder.className.

functionArgumentsObject

The arguments for the raster function. The structure depends on the function specified. See raster functions for a list of functions and their arguments.

Example:

rasterFunction.functionArguments = {
  "Azimuth":215.0,
  "Altitude":75.0,
  "ZFactor":0.3
};

functionNameString

The raster function name. See raster functions for a list of functions and their arguments.

Example:

rasterFunction.functionName = "Stretched";

outputPixelTypeString

Defines the pixel type of the output image.

Possible Values: c128 | c64 | f32 | f64 | s16 | s32 | s8 | u1 | u16 | u2 | u32 | u4 | u8 | unknown

Default Value:unknown

Example:

rasterFunction.outputPixelType = "u8";

variableNameObject

The variable name for the raster function.

Example:

rasterFunction.variableName = "DEM";

Method Overview

Method Details

fromJSON(json){*}static

Creates a new instance of this class and initializes it with values from a JSON object generated from a product in the ArcGIS platform. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Parameter:

json Object A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns:

Type	Description
*	Returns a new instance of this class.

toJSON(){Object}

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() topic in the Guide for more information.

Returns:

Type	Description
Object	The ArcGIS portal JSON representation of an instance of this class.