ArcGIS Pro 3.1 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / BasicRasterLayer Class / SetColorizer Method
Your custom colorizer that will be used to draw the raster layer.
Example

In This Topic
    SetColorizer Method
    In This Topic
    Sets the colorizer. This method must be called on the MCT. Use QueuedTask.Run.
    Syntax
    public void SetColorizer( 
       CIMRasterColorizer colorizer
    )
    Public Sub SetColorizer( _
       ByVal colorizer As CIMRasterColorizer _
    ) 

    Parameters

    colorizer
    Your custom colorizer that will be used to draw the raster layer.
    Exceptions
    ExceptionDescription
    This method or property must be called within the lambda passed to QueuedTask.Run.
    Cannot set colorizer for layer.
    Remarks
    Use CanSetColorizer to determine if the colorizer is valid for the layer before updating it.
    Example
    Update the raster colorizer on a raster layer
    await QueuedTask.Run(() =>
    {
      // Get the colorizer from the raster layer.
      CIMRasterColorizer rasterColorizer = rasterLayer.GetColorizer();
      // Update raster colorizer properties.
      rasterColorizer.Brightness = 10;
      rasterColorizer.Contrast = -5;
      rasterColorizer.ResamplingType = RasterResamplingType.NearestNeighbor;
      // Update the raster layer with the changed colorizer.
      rasterLayer.SetColorizer(rasterColorizer);
    });
    Update the RGB colorizer on a raster layer
    await QueuedTask.Run(() =>
    {
      // Get the colorizer from the raster layer.
      CIMRasterColorizer rColorizer = rasterLayer.GetColorizer();
      // Check if the colorizer is an RGB colorizer.
      if (rColorizer is CIMRasterRGBColorizer rasterRGBColorizer)
      {
        // Update RGB colorizer properties.
        rasterRGBColorizer.StretchType = RasterStretchType.ESRI;
        // Update the raster layer with the changed colorizer.
        rasterLayer.SetColorizer(rasterRGBColorizer);
      }
    });
    Create a new colorizer based on a default colorizer definition and apply it to the raster layer
    await QueuedTask.Run(async () =>
    {
      // Check if the Stretch colorizer can be applied to the raster layer.
      if (rasterLayer.GetApplicableColorizers().Contains(RasterColorizerType.StretchColorizer))
      {
        // Create a new Stretch Colorizer Definition using the default constructor.
        StretchColorizerDefinition stretchColorizerDef_default = new StretchColorizerDefinition();
        // Create a new Stretch colorizer using the colorizer definition created above.
        CIMRasterStretchColorizer newStretchColorizer_default =
    await rasterLayer.CreateColorizerAsync(stretchColorizerDef_default) as CIMRasterStretchColorizer;
        // Set the new colorizer on the raster layer.
        rasterLayer.SetColorizer(newStretchColorizer_default);
      }
    });
    Create a new colorizer based on a custom colorizer definition and apply it to the raster layer
    await QueuedTask.Run(async () =>
    {
      // Check if the Stretch colorizer can be applied to the raster layer.
      if (rasterLayer.GetApplicableColorizers().Contains(RasterColorizerType.StretchColorizer))
      {
        // Create a new Stretch Colorizer Definition specifying parameters 
        // for band index, stretch type, gamma and color ramp.
        StretchColorizerDefinition stretchColorizerDef_custom =
    new StretchColorizerDefinition(1, RasterStretchType.ESRI, 2, colorRamp);
        // Create a new stretch colorizer using the colorizer definition created above.
        CIMRasterStretchColorizer newStretchColorizer_custom =
    await rasterLayer.CreateColorizerAsync(stretchColorizerDef_custom) as CIMRasterStretchColorizer;
        // Set the new colorizer on the raster layer.
        rasterLayer.SetColorizer(newStretchColorizer_custom);
      }
    });
    Update the raster colorizer on a mosaic layer
    await QueuedTask.Run(() =>
    {
      // Get the image sub-layer from the mosaic layer.
      ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
      // Get the colorizer from the image sub-layer.
      CIMRasterColorizer rasterColorizer = mosaicImageSubLayer.GetColorizer();
      // Update raster colorizer properties.
      rasterColorizer.Brightness = 10;
      rasterColorizer.Contrast = -5;
      rasterColorizer.ResamplingType = RasterResamplingType.NearestNeighbor;
      // Update the image sub-layer with the changed colorizer.
      mosaicImageSubLayer.SetColorizer(rasterColorizer);
    });
    Update the RGB colorizer on a mosaic layer
    await QueuedTask.Run(() =>
    {
      // Get the image sub-layer from the mosaic layer.
      ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
      // Get the colorizer from the image sub-layer.
      CIMRasterColorizer rColorizer = mosaicImageSubLayer.GetColorizer();
      // Check if the colorizer is an RGB colorizer.
      if (rColorizer is CIMRasterRGBColorizer rasterRGBColorizer)
      {
        // Update RGB colorizer properties.
        rasterRGBColorizer.StretchType = RasterStretchType.ESRI;
        // Update the image sub-layer with the changed colorizer.
        mosaicImageSubLayer.SetColorizer(rasterRGBColorizer);
      }
    });
    Create a new colorizer based on a default colorizer definition and apply it to the mosaic layer
    await QueuedTask.Run(async () =>
    {
      // Get the image sub-layer from the mosaic layer.
      ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
      // Check if the Stretch colorizer can be applied to the image sub-layer.
      if (mosaicImageSubLayer.GetApplicableColorizers().Contains(RasterColorizerType.StretchColorizer))
      {
        // Create a new Stretch Colorizer Definition using the default constructor.
        StretchColorizerDefinition stretchColorizerDef_default = new StretchColorizerDefinition();
        // Create a new Stretch colorizer using the colorizer definition created above.
        CIMRasterStretchColorizer newStretchColorizer_default =
    await mosaicImageSubLayer.CreateColorizerAsync(stretchColorizerDef_default) as CIMRasterStretchColorizer;
        // Set the new colorizer on the image sub-layer.
        mosaicImageSubLayer.SetColorizer(newStretchColorizer_default);
      }
    });
    Create a new colorizer based on a custom colorizer definition and apply it to the mosaic layer
    await QueuedTask.Run(async () =>
    {
      // Get the image sub-layer from the mosaic layer.
      ImageMosaicSubLayer mosaicImageSubLayer = mosaicLayer.GetImageLayer();
      // Check if the Stretch colorizer can be applied to the image sub-layer.
      if (mosaicImageSubLayer.GetApplicableColorizers().Contains(RasterColorizerType.StretchColorizer))
      {
        // Create a new Stretch colorizer definition specifying parameters
        // for band index, stretch type, gamma and color ramp.
        StretchColorizerDefinition stretchColorizerDef_custom =
    new StretchColorizerDefinition(1, RasterStretchType.ESRI, 2, colorRamp);
        // Create a new stretch colorizer using the colorizer definition created above.
        CIMRasterStretchColorizer newStretchColorizer_custom =
    await mosaicImageSubLayer.CreateColorizerAsync(stretchColorizerDef_custom) as CIMRasterStretchColorizer;
        // Set the new colorizer on the image sub-layer.
        mosaicImageSubLayer.SetColorizer(newStretchColorizer_custom);
      }
    });
    Update the raster colorizer on an image service layer
    await QueuedTask.Run(() =>
    {
      // Get the colorizer from the image service layer.
      CIMRasterColorizer rasterColorizer = isLayer.GetColorizer();
      // Update the colorizer properties.
      rasterColorizer.Brightness = 10;
      rasterColorizer.Contrast = -5;
      rasterColorizer.ResamplingType = RasterResamplingType.NearestNeighbor;
      // Update the image service layer with the changed colorizer.
      isLayer.SetColorizer(rasterColorizer);
    });
    Update the RGB colorizer on an image service layer
    await QueuedTask.Run(() =>
    {
      // Get the colorizer from the image service layer.
      CIMRasterColorizer rColorizer = isLayer.GetColorizer();
      // Check if the colorizer is an RGB colorizer.
      if (rColorizer is CIMRasterRGBColorizer rasterRGBColorizer)
      {
        // Update RGB colorizer properties.
        rasterRGBColorizer.StretchType = RasterStretchType.ESRI;
        // Update the image service layer with the changed colorizer.
        isLayer.SetColorizer((CIMRasterColorizer)rasterRGBColorizer);
      }
    });
    Create a new colorizer based on a default colorizer definition and apply it to the image service layer
    await QueuedTask.Run(async () =>
    {
      // Check if the Stretch colorizer can be applied to the image service layer.
      if (isLayer.GetApplicableColorizers().Contains(RasterColorizerType.StretchColorizer))
      {
        // Create a new Stretch Colorizer Definition using the default constructor.
        StretchColorizerDefinition stretchColorizerDef_default = new StretchColorizerDefinition();
        // Create a new Stretch colorizer using the colorizer definition created above.
        CIMRasterStretchColorizer newStretchColorizer_default =
    await isLayer.CreateColorizerAsync(stretchColorizerDef_default) as CIMRasterStretchColorizer;
        // Set the new colorizer on the image service layer.
        isLayer.SetColorizer(newStretchColorizer_default);
      }
    });
    Create a new colorizer based on a custom colorizer definition and apply it to the image service layer
    await QueuedTask.Run(async () =>
    {
      // Check if the Stretch colorizer can be applied to the image service layer.
      if (isLayer.GetApplicableColorizers().Contains(RasterColorizerType.StretchColorizer))
      {
        // Create a new Stretch Colorizer Definition specifying parameters
        // for band index, stretch type, gamma and color ramp. 
        StretchColorizerDefinition stretchColorizerDef_custom =
    new StretchColorizerDefinition(1, RasterStretchType.ESRI, 2, colorRamp);
        // Create a new stretch colorizer using the colorizer definition created above.
        CIMRasterStretchColorizer newStretchColorizer_custom =
    await isLayer.CreateColorizerAsync(stretchColorizerDef_custom) as CIMRasterStretchColorizer;
        // Set the new colorizer on the image service layer.
        isLayer.SetColorizer(newStretchColorizer_custom);
      }
    });
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3.0 or higher.
    See Also