I would like to create an ArcPy script to change the color and transparency of a collection of layers.
The color and transparency would be based on wildcards such as "_dog" or "_chicken".
The layer symbology is "single symbol" and the transparency will be a constant percentage for the color.
The problem I encountered, how do I change the color and transparency of the layer?
I can't find any code samples or documentation to point me in the right direction.
I found a post that suggests this is not possible with ArcPy … hopefully that's incorrect.
Best Answer
You can't really change the symbology of a layer in arcpy with the level of customization you have when just right clicking a layer and using the symbology menu. However, you can make a "template" layer that contains the symbology you want and then use
ApplySymbologyFromLayer_management (in_layer, in_symbology_layer)
. This will allow you to apply the symbology for any layer with that of the "template". Then you can use: