topic Re: Access to Dynamic Range Adjustment (DRA) raster rendering using the CIM? in Python Questions

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

TobiSellekaerts — Wed, 13 Sep 2023 08:13:05 GMT

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.

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

AlfredBaldenweck — Wed, 13 Sep 2023 13:52:47 GMT

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.

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

ShaunWalbridge — Tue, 19 Sep 2023 19:39:38 GMT

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.