ArcGIS Pro 3.0.2 - How to apply colormap file .clr to feature class symbology?

[VincentLaunstorfer]

Hi,

I have a single band raster with a color classification I exported to colormap .clr file. Now the .clr file is simple a test file with gridcode and RGB values...

As I converted my single band raster to polygons, I would like to apply the same color classification using the colormap .clr file. How is it possible?

Thanks

[Luke_Pinner · Accepted solution]

Convert your .clr to a .csv with gridcode and rgb fields.  You'll need to do some processing (e.g. in Excel or as a field calculation after you join) to get the separate R G B values into a single text value "rgb(r, g, b)" then join the csv to your feature class and use Attribute-driven color symbology. 

How To: Apply Hex or RGB color codes from an attribute field as a feature symbology in ArcGIS Pro

Attribute-driven color in symbology

[VincentLaunstorfer]

Thanks. It eventually worked. The workflow is rather cumbersome and in addition to the resources mentioned above, follow the Attribute-driven instructions closely:

https://pro.arcgis.com/en/pro-app/latest/help/mapping/layer-properties/attribute-driven-symbology.ht...

[RussellGibson_ns]

Hi, Vincent.

How did you export to a .clr in ArcGIS Pro?

[Alec]

For anyone looking 

[FamoussaDEMBELE]

Hi,

I have a single band raster with a color classification I applied a colormap using .clr file (which had 5 predefined classes from 1 to 5). Now after adding the colormap, I am getting other unwanted classes which are not of my interest as seen below. How do I remove those classes that are not represented on my raster image without changing the colormap settings?

Thanks

[VincentLaunstorfer]

Hi,

In the Imagery tab, I used the Raster Functions -> Data Management -> Mask in order to 'mask' unwanted pixels, as shown below. Although, you seem to have lots of unwanted pixel in your example. I would recommend to reclass your raster beforehand to 'group' all unwanted pixels together. 

Hope this help

[FamoussaDEMBELE]

Hello,

Thank you very much for your feedback.

I tried to reclassify all the unwanted classes to 1 class. However when I export the reclassified data (map) the colormap and import it again, it comes back with the unwanted classes.