Adding feature class to map script

JonahLay1

Hi,

 I created a python script tool that creates a Thiessen Polygons. The tool runs fine. But how do I create it so that it automatically adds a new layer to the map? Right now, it only creates it in the geodatabase. I would have to manually drag and drop it into the map to get it to appear.

Thank you!

Jonah

JaredPilbeam2

Hello,

Any success with this? As of Pro 2.8 I'm having the same issue.

Working from a notebook, this successfully adds a feature class to the map.

import arcpy, os
data = r'path\to\BaseLayer_Processed_Elementary_08302021_clip'
arcpy.env.addOutputsToMap = True 

try:

arcpy.management.MakeFeatureLayer(data, data) 
    
except:
    print(arcpy.GetMessages())

 

But, according to the docs the above only creates a temp layer in the map. So, unless you save the map or export the layer to a feature class it won't be saved. So, I tried the below script:

import arcpy, os
data = r'path\to\BaseLayer_Processed_Elementary_08302021_clip'
arcpy.env.addOutputsToMap = True 

try:

    # Write the selected features to a new featureclass
    arcpy.CopyFeatures_management(data, os.path.basename(data))
    
except:
    print(arcpy.GetMessages())

 

Both scripts work to add a feature class to the map. However, when I convert to a script tool to run within pro it runs successfully, but nothing is added to the map.

Tool version of the script:

import arcpy, os

#input feature class from model. It will be added to the map.
data = arcpy.GetParameterAsText(0)
arcpy.env.addOutputsToMap = True
arcpy.AddMessage(f'adding to map: {data}') 

try:

    #Copies features from the input feature class or layer to a new feature class.
    arcpy.CopyFeatures_management(data, os.path.basename(data))
    
except:
    arcpy.AddMessage(arcpy.GetMessage())

 

Tool interface: