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GeoJohn
GeoJohn
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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:

yourLayer = arcpy.mapping.Layer(r'path to your layer') 
yourLayer.transparency = 50 #as a percentage

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".

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:

yourLayer = arcpy.mapping.Layer(r'path to your layer') 
yourLayer.transparency = 50 #as a percentage
Source Link
GeoJohn
GeoJohn
  • 2k
  • 2
  • 17
  • 27

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".