Access to Dynamic Range Adjustment (DRA) raster rendering using the CIM?

Question

I'm using the CIM to make some adjustments to a raster layer in a map.  I've found most of what I need under the cim.colorizer (i.e. stretch type, transparency).  I can't see where I can access DRA (dynamic range adjustment).  I'm assuming I will need to do this using the CIM, as I can't see where I can set it using any other python functionality.  (Alternate routes to success are welcome!)  Can I turn on DRA using the CIM, or using Python?

Using ArcGIS Pro 3.1.2.

ShaunWalbridge · Answer

One approach to determining the appropriate properties for cases like this is to change the data you'd like to change from Python, save the result as a new project, then extract the two APRX files and compare the related JSON CIM representations, and compare them with a diff tool. The documentation as recommended by @alfredman is the better approach, but sometimes seeing what the code actually changed can also be useful.

abaldenweck@blm.gov_BLM_EGIS · Answer

Try https://github.com/Esri/cim-spec/blob/809fb365d8d204d1fbdc51b3fab5bd17d88de2d1/docs/v2/CIMImageLayers.md#enumeration-colorizerscalingtype

You'll have to jump through a few hoops to get there, but I think that's the property you want.