How to set Image Sevice Layer Symbology

Question

Original User: a5xs

I am using a mosaic object to store time tagged images.  I discovered that if I create a mxd and publish to a dynamic map service my symbology changes do not get saved to the service and there is no way to get access to the values.  Therefore I switched to an image service in hopes that I would have access to the values.  In the arcmap gui I see I have access to the symbology properties but now I need access to them via code.

Hooks I am looking for are:
1. Turn on alpha channel
2. Set alpha channel to band 4
3. Set the stretch type to none

[ATTACH]4257[/ATTACH]

[ATTACH]4256[/ATTACH]

before.png

after.png

DakshataShahi1_0-1748538622489.png

EthanMink_0-1748535885495.png

Anonymous User · Answer

Original User: chri6255 Hi Jim, Here is an example of the syntax you would you for a rendering rule performing a "Streach" raster funtion. There is a link below of different ways you can use the render rule to manipulate your image service. RestLayerProperties(); imgLayer.BandIds = new int[] {0,1,2,3}; IDictionary functionArguments = new Dictionary(); functionArguments.Add("StretchType", iStretchType); functionArguments.Add("NumberOfStandardDeviations", numberOfStandardDeviations); functionArguments.Add("Statistics", statistics); functionArguments.Add("Gamma", gamma); imgLayer.RenderingRule = new RenderingRule() { RasterFunctionName = "Stretch", RasterFunctionArguments = functionArguments, VariableName = "Raster" }; imgLayer.Refresh(); Here is a link to the documentation on what types of rendering rules you can use against your image service. http://sampleserver3.arcgisonline.com/ArcGIS/SDK/REST/israsterfunctions.html

JimHenry · Answer

Thanks to Laurence from ESRI support for help so far!

I am still in search of code hooks on the image service to turn on the alpha channel set it to band 4 and set the stretch type to none?

[ATTACH]4679[/ATTACH]

Good - I took the raw data and through code generated an image. 
Better - Through a script take out the alpha channel. 
Best - The original smoothed image.

[ATTACH]4681[/ATTACH]
[ATTACH]4680[/ATTACH]

0.png

RemoveAlphaChannel_Loop.txt.zip

RemoveAlphaChannel.txt.zip