Network Dataset properties

Zusammenfassung

The Describe function returns the following properties for network datasets. The Dataset property group is also supported.

For a network dataset, the Describe dataType property returns a value of "NetworkDataset".

A network dataset is used to model transportation networks.

Eigenschaften

Eigenschaft	Erläuterung	Datentyp
attributes (Schreibgeschützt)	Returns a list of Network Attribute objects.	Object
catalogPath (Schreibgeschützt)	The path of the network dataset.	String
defaultTravelModeName (Schreibgeschützt)	The name of the network dataset's default travel mode. An empty string is returned if the network dataset does not have a default travel mode.	String
directions (Schreibgeschützt)	Returns a Network Directions object defined for the network dataset. This object can be used to get directions information at the network dataset level. The `directions` property is available only if the `supportsDirections` property returns `True`.	Object
edgeSources (Schreibgeschützt)	Returns a list of Edge Source objects.	Object
elevationModel (Schreibgeschützt)	The network elevation model used to refine the connectivity of the network dataset. This property returns the following keywords: `None` `Elevation Fields` `Z Coordinate Values`	String
historicalTrafficData (Schreibgeschützt)	Returns the Historical Traffic Data object defined for the network dataset. This object can be used to get historical traffic information such as the historical traffic tables used by the network dataset. This property is available only if the `supportsHistoricalTrafficData` property returns `True`.	Object
isBuildable (Schreibgeschützt)	Specifies whether the network dataset can be built. SDC-based network datasets cannot be built, as they are read-only.	Boolean
junctionSources (Schreibgeschützt)	Returns a list of Junction Source objects.	Object
liveTrafficData (Schreibgeschützt)	Returns a Live Traffic Data object defined for the network dataset. This object can be used to get information about live traffic properties, such as traffic feed name used by the network dataset. This property is available only if the `supportsLiveTrafficData` property returns `True`.	Object
networkType (Schreibgeschützt)	The type of workspace containing the network dataset. This property returns the `Geodatabase` keyword.	String
optimizations (Schreibgeschützt)	Returns a list of strings indicating the optimizations, if any, the network dataset uses. If the network dataset has a service area index to increase the speed at which service area polygons are calculated, the `Service Area Index` value is returned in the list of optimizations. If the network dataset is dissolved, the `Dissolve` value is returned in the list of optimizations. If no optimizations are present, an empty list is returned.	String
sources (Schreibgeschützt)	Returns a list of Network Source objects. This property returns all the sources for the network dataset. To get a list of a particular source type—for example, only the edge sources—use the `edgeSources` property.	Object
supportsDirections (Schreibgeschützt)	Specifies whether the network dataset supports generating directions.	Boolean
supportsHistoricalTrafficData (Schreibgeschützt)	Specifies whether the network dataset supports the use of historical traffic information.	Boolean
supportsLiveTrafficData (Schreibgeschützt)	Specifies whether the network dataset supports the use of live traffic information.	Boolean
supportsTurns (Schreibgeschützt)	Specifies whether the network dataset supports turns.	Boolean
systemJunctionSource (Schreibgeschützt)	Returns a System Junction Source object defined for the network dataset. This property is not available with SDC-based network datasets, as they do not support system junction sources.	Object
timeZoneAttributeName (Schreibgeschützt)	The name of the time zone attribute. If the network dataset does not support time zones, this property returns an empty string.	String
timeZoneTableName (Schreibgeschützt)	The name of the time-zone table that stores the list of time zones used by the network dataset.	String
trafficSupportType (Schreibgeschützt)	The type of traffic data currently configured for this network dataset. This property returns the following keywords: `HISTORICAL` `HISTORICAL_AND_LIVE` `LIVE` `NONE` If live traffic data is supported (`supportsLiveTrafficData` returns `True`), but a feed source has not been configured, this property will return `HISTORICAL`.	String
turnSources (Schreibgeschützt)	Returns a list of Turn Source objects.	Object

Codebeispiel

Network dataset properties example

Display some network dataset properties.

# Name: NDSProperties_ex01.py
# Description: Print some of the network dataset properties.
import arcpy

# Set the workspace
arcpy.env.workspace = "C:/Data/Paris.gdb/Transportation"
# Create Describe object for the network dataset
desc = arcpy.Describe("ParisMultimodal_ND")

# Print general network dataset properties
print("Network type:   " + desc.networkType)
print("Supports turns? " + str(desc.supportsTurns))
print("Supports directions? " + str(desc.supportsDirections))
print("Is buildable?   " + str(desc.isBuildable))
print("Elevation model: " + desc.elevationModel)
print("Supports historical traffic data: " + str(desc.supportsHistoricalTrafficData))
print("Time zone attribute name: " + desc.timeZoneAttributeName)
print("Time zone table name: " + desc.timeZoneTableName)
print("Optimizations: " + ", ".join(desc.optimizations))

Network Dataset properties

Zusammenfassung

Eigenschaften

Codebeispiel

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