topic Re: Set Environment parameter in custom geoprocessing tool in Python Questions

Set Environment parameter in custom geoprocessing tool

EugeneSosnin_GSI — Fri, 23 May 2025 19:20:07 GMT

Hi,

I build a new geoprocessing tool, and I want to set a default outputCoordinateSystem in Environment:

I found we have it tool parameters:

I tried to use initializeParameters:

class ToolValidator: # Class to add custom behavior and properties to the tool and tool parameters. def __init__(self): # Set self.params for use in other validation methods. self.params = arcpy.GetParameterInfo() def initializeParameters(self): # Customize parameter properties. This method gets called when the # tool is opened. for param in self.params: if param.name == "outputCoordinateSystem": param.value = arcpy.SpatialReference(2230) return

but it didn't work out.

Could you, please, help me?

Re: Set Environment parameter in custom geoprocessing tool

HaydenWelch — Fri, 23 May 2025 19:36:59 GMT

Your parameter name is the Name field. that is not 'outputCoordinateSystem' in your screenshot, but 'output_feature...'

You can also just manually set the environment variable using arcpy.env:

import arcpy ... def main(): arcpy.env.outputCoordinateSystem = arcpy.SpatialReference(2230) ...

Re: Set Environment parameter in custom geoprocessing tool

EugeneSosnin_GSI — Tue, 27 May 2025 22:10:47 GMT

Thank you for the answer.

Yeah, I am still confused how to set the Environment parameter. Therefore, I could not accept the answer.

Currently, I use:

def main(): with arcpy.EnvManager(outputCoordinateSystem='PROJCS["California_...'): arcpy.management.CopyFeatures(path, outpath)