GetTravelModes

Synthèse

Returns a dictionary of travel mode objects that are available with the network data source. The dictionary keys are the names of the travel modes, and the dictionary values are the travel mode objects.

Discussion

One or more travel modes can be defined on a local network dataset or on a network datasource from an ArcGIS Enterprise or ArcGIS Online portal. This function can be used to populate a value list with the available travel modes given a network data source. For example, a geoprocessing script tool may have a parameter of type String called Travel Modes that can be populated with a list of travel mode names once a network dataset has been selected on the tool dialog box.

Syntaxe

GetTravelModes (network_dataset_path)

Paramètre	Explication	Type de données
network_dataset_path	The network dataset or the URL of a portal configured with the network analysis services. A network dataset can be referenced as a catalog path, network dataset layer object, or layer name.	String

Valeur renvoyée

Type de données	Explication
Dictionary	A dictionary whose keys are the travel mode names and whose values are the travel mode objects.

Exemple de code

GetTravelModes example 1

Get the travel modes in a network dataset and print the walking time travel mode.

import arcpy

nds = 'C:/Data/SanDiego.gdb/Transportation/Streets_ND'
travel_modes = arcpy.nax.GetTravelModes(nds)
print(travel_modes['Walking Time'])

GetTravelModes example 2

Create a list of travel mode names on ArcGIS Online. The names could be localized, depending on the user's account setting.

import arcpy

travel_modes = arcpy.nax.GetTravelModes("https://www.arcgis.com/")
travel_mode_names = [travel_modes[mode].name for mode in travel_modes]

GetTravelModes example 3

This sample shows how to get a travel mode from a network and print some of its properties.

import arcpy

network = r"C:/Data/SanFrancisco.gdb/Transportation/Streets_ND"
# Get all travel modes from the network dataset
travel_modes = arcpy.nax.GetTravelModes(network)

# Print the impedance attribute and restrictions used for each travel mode
for travel_mode_name in travel_modes:
    travel_mode = travel_modes[travel_mode_name]
    print(travel_mode_name)
    print("Impedance:", travel_mode.impedance)
    print("Restrictions:", ", ".join(travel_mode.restrictions))
    print("")

GetTravelModes example 4

This sample shows how to clone a travel mode from a network, update its properties, and use it in an analysis.

import arcpy

network = r"C:/Data/SanFrancisco.gdb/Transportation/Streets_ND"
# Get all travel modes from the network dataset
travel_modes = arcpy.nax.GetTravelModes(network)
# Construct a new TravelMode object from the existing Driving Time travel mode
new_travel_mode = arcpy.nax.TravelMode(travel_modes["Driving Time"])
# Update the useHierarchy property to turn hierarchy off, and update the name
new_travel_mode.name = "Driving Time without Hierarchy"
new_travel_mode.useHierarchy = "NO_HIERARCHY"
# Use the new travel mode object when constructing an OD cost matrix analysis
od_object = arcpy.nax.OriginDestinationCostMatrix(network)
od_object.travelMode = new_travel_mode