topic Re: How to display feature layer from Python Toolbox? in ArcGIS Pro Questions

How to display feature layer from Python Toolbox?

Davec43 — Thu, 19 Jan 2023 18:41:12 GMT

I have a Search Cursor that operates at the end of the model. It works as intended but does not add the layer it ends up creating to the Map. I've tried connecting it to the "Collect Values" tool with Paramaters and Display selected, and it still won't work.

Here's the script:

import os import sys import arcpy Filter_Layer = arcpy.GetParameterAsText(0) # Feature Layer Search_Layer = arcpy.GetParameterAsText(1) # Feature Layer Workspace = arcpy.GetParameterAsText(2) # Workspace FP1 = os.path.abspath(Workspace) events = arcpy.da.SearchCursor(Filter_Layer, ['Event']) unique_events = list(set([row[0] for row in events])) sql = "Event IN(" + ','.join(map(str, unique_events)) + ")" arcpy.management.SelectLayerByAttribute(Search_Layer, "NEW_SELECTION", sql, None) arcpy.management.CopyFeatures(Search_Layer, fr"{FP1}\RTL_Filtered", '', None, None, None)

Re: How to display feature layer from Python Toolbox?

DavidSolari — Thu, 19 Jan 2023 21:00:53 GMT

Try adding a derived output parameter to your tool, then using the "SetParameter" or "SetParameterAsText" function in your script to put the output features into that parameter. Tools don't output data unless they have an output parameter configured.

Also for the future, what you're writing is a script tool in a normal toolbox, a Python toolbox is a different beast entirely.

Re: How to display feature layer from Python Toolbox?

Davec43 — Fri, 20 Jan 2023 13:28:46 GMT

It worked thank you!

Added a new paramater (output) and then,

arcpy.SetParameterAsText(3, outputFile)

mport os import sys import arcpy Filter_Layer = arcpy.GetParameterAsText(0) # Feature Layer Search_Layer = arcpy.GetParameterAsText(1) # Feature Layer Workspace = arcpy.GetParameterAsText(2) # Workspace FP1 = os.path.abspath(Workspace) outputFile = fr"{FP1}\RTL_Filtered" events = arcpy.da.SearchCursor(Filter_Layer, ['Event']) unique_events = list(set([row[0] for row in events])) sql = "Event IN(" + ','.join(map(str, unique_events)) + ")" arcpy.management.SelectLayerByAttribute(Search_Layer, "NEW_SELECTION", sql, None) arcpy.management.CopyFeatures(Search_Layer, fr"{FP1}\RTL_Filtered", '', None, None, None) arcpy.SetParameterAsText(3, outputFile)