ERROR 030232: Invalid travel mode value: "The travel mode has a distance-based impedance attribute that is different from the distance attribute."

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10-25-2021 01:16 PM
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PhilipOrlando
New Contributor II

I am trying to create a service area analysis layer that uses miles (instead of kilometers) as the impedance value.

Specifically, I am trying to pass a custom TravelMode object to the arcpy.na.MakeServiceAreaAnalysis method and I'm seeing the following error:

ERROR 030232: Invalid travel mode value: "The travel mode has a distance-based impedance attribute that is different from the distance attribute."
Failed to execute (MakeServiceAreaAnalysisLayer).

Here is a minimal (although not reproducible) example of my script: 

 

 

 

 

# Load dependencies
import arcpy

# Source Routing_ND layer
network = "path/to/StreetMapPremium/NorthAmerica.gdb/Routing/Routing_ND"

# Create a list of reference travel modes
travel_modes = arcpy.na.GetTravelModes(network)

# Create a custom travel mode around default 'Driving Distance' travel mode.
new_travel_mode = arcpy.na.TravelMode(travel_modes['Driving Distance'])

# Setting custom travel name and impedance value
# new_travel_mode.name = 'Custom Driving Distance'
new_travel_mode.impedance = 'Miles'

# Create service area analysis layer
result_object = arcpy.na.MakeServiceAreaAnalysisLayer(
  network_data_source = network,
  layer_name = 'test_layer',
  travel_mode = new_travel_mode,
  cutoffs = 10)

 

 

 

 


Any insight is appreciated! 

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2 Replies
DanPatterson
MVP Esteemed Contributor

slightly different answer

030232: Invalid travel mode value: <value>.—ArcGIS Pro | Documentation

'Custom Driving Distance'  could be it doesn't like spaces in the name 


... sort of retired...
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PhilipOrlando
New Contributor II

Thank you for the reply. Unfortunately, the code fails regardless of whether I set the new_travel_mode.name attribute or not... I probably should have excluded that from my example. I just commented this out to avoid any confusion.

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