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I'm modelling accessibility, so am using network analyst arcpy.na.MakeServiceAreaAnalysisLayer().

However, I don't want to enter anything for the time_of_day parameter. How do I write my Python script so that I can write parameters after this, but not include time_of_day or time_zone?

I get ERROR 000628: Cannot set input into parameter time_of_day.

I'm a newbie to scripting.

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1 Answer 1

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If you do not wish to enter a value for a parameter, you'd typically pass it an empty string. The time_of_day parameter is the 6th parameter (or so I read from the doc). 

arcpy.na.MakeServiceAreaAnalysisLayer(network, layer_name,
                                                travel_mode, "FROM_FACILITIES",
                                                [3], "", polygon_detail="HIGH",
                                                geometry_at_overlaps="OVERLAP")

However, only the input network parameter is required. You should be able to run the tool just like: 

arcpy.na.MakeServiceAreaAnalysisLayer(network)

Or, if you only want to provide one optional parameter that isn't the first and not pass in a bunch of empty strings, you can pass a value to the assigned parameter like so:

arcpy.na.MakeServiceAreaAnalysisLayer(network, geometry_at_overlaps="OVERLAP")

(The geometry_at_overlaps is actually the 10th parameter)

To answer the question in the comment, how to use all parameters up till geometry_at_cutoffs, but skipping time_of_day and time_zone:

arcpy.na.MakeServiceAreaAnalysisLayer(network, layer_name,
                                    travel_mode, "FROM_FACILITIES", [1, 2, 3],
                                    time_of_day="",
                                    time_zone="",
                                    output_type="LINES",
                                    polygon_detail="HIGH",
                                    geometry_at_overlaps="OVERLAP",
                                    geometry_at_cutoffs="RINGS")

(I started making them named parameters for ease of seeing what parameter is where)

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  • Thank you, thats helpful! Although I want to use parameters up until geometry_at_cutoffs, just missing the time_of_day and time_zone, would the above still be applicable?
    – JGe
    Jan 4, 2017 at 22:02
  • Good answer. I would include a link to the official documentation: pro.arcgis.com/en/pro-app/tool-reference/network-analyst/…
    – Mintx
    Jan 4, 2017 at 22:03
  • @JGe I added one more example for what you're doing specifically.
    – KHibma
    Jan 5, 2017 at 14:48

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