I need help! The version we're running arc on is having issues with applying symbology through the GUI as it will cause the system to crash. ESRI has released an update but our IT process to get the update approved is lengthy. I've found some alternatives like Apply Symbology from Layer but it doesn't always work. How would I using python apply "Unique_Values" and change the size of the sybmol?
I've tried this but I keep getting errors on line 2.
import arcpy
mxd = arcpy.mapping.MapDocument("current")
lyr = arcpy.mapping.ListLayers(mxd, "PTL")[0]
if lyr.symbologyType == "UNIQUE_VALUES":
lyr.symbology.valueField = "Event"
lyr.symbology.addAllValues()
arcpy.RefreshActiveView()
arcpy.RefreshTOC()
del mxd
