I want to apply labeling in multiple layers using Arcade Expression in ArcGIS Pro, So I created below python script, and I also set Arcade to apply labeling: label_class.expression = "Arcade".
But problem is- Arcade language changes to VBScript or other language other than Arcade after running the script. I have to set manually Arcade each time for each layer, then apply the script, and then work. What is the solution to set default Language Arcade that will not change after running the script?
import arcpy
def set_labels():
aprx = arcpy.mp.ArcGISProject("CURRENT")
m = aprx.listMaps()[0]
layer_types = ["PD", "LD"]
name_field_mapping = {
"PD": ["P_Desc", "Label_En", "Label_Bn"],
"LD": ["L_Desc"],
}
for lyr in m.listLayers():
for layer_type in layer_types:
if layer_type in lyr.name:
if lyr.supports("SHOWLABELS"):
if not lyr.listLabelClasses():
label_class = lyr.labelClasses[0]
else:
label_class = lyr.listLabelClasses()[0]
# Setting label expression language to Arcade
label_class.expression = "Arcade"
if layer_type == "PD":
label_expression = """ "<BSE>"+"<ALIGN horizontal = 'middle'>"+"<FNT name = 'Work Sans' style = 'italic' named_instance = 'bold italic' wght = '700' size = '13'>" + "<CLR blue = '255'>" + $feature.P_Desc + "</CLR>" +TextFormatting.NewLine+"<BOL>" + "<CLR red='255' green='236' blue='0' alpha='100'>"+"<BGD red='0' green='0' blue='0' alpha='100'>" +"<_ITA>"+ $feature.Label_En + "</_ITA>"+"</BGD></CLR>" + "</BOL>" + TextFormatting.NewLine + "<CLR red='255' green='255' blue='255' alpha='100'>"+"<BGD red='230' green='0' blue='0' alpha='100'>" + $feature.Label_Bn + "</BGD></CLR>" + "</FNT>"+"</ALIGN>"+"</BSE>" """
elif layer_type == "LD":
label_expression = """ "<BSE>"+"<ALIGN horizontal = 'middle'>" + "<FNT name = 'Work Sans' style = 'italic' named_instance = 'bold italic' wght = '700' size = '13'>" + "<CLR red = '255'>" + $feature.L_Desc + "</CLR>" + "</FNT>" + "</ALIGN>"+ "</BSE>" """
label_class.SQLQuery = "L_Desc <> 'Plot'"
else:
label_expression = f"${name_field_mapping[layer_type][0]}"
label_class.expression = label_expression
label_class.showClassLabels = True
lyr.showLabels = True
aprx.save()
set_labels()
