Network Directions

摘要

The Network Directions object for the network daatset provides information about directions settings at the network dataset level, such as the output length units or length attribute, that are used to generate directions.

属性

属性	说明	数据类型
lengthAttributeName （只读）	The name of the network attribute to be used for reporting travel distances.	String
timeAttributeName （只读）	The name of the network attribute to be used for reporting travel time.	String
roadClassAttributeName （只读）	The name of the network attribute to be used for road classification.	String
defaultOutputLengthUnits （只读）	The default length units that will be used for reporting distances in driving directions.	String
signpostFeatureClassName （只读）	The name of the feature class containing the signposts.	String
signpostStreetsTableName （只读）	The name of the indexed table containing signpost street references.	String

代码示例

Network Directions Properties Example

Display a summary of the directions information for the network dataset.

# Name: NDSDirectionProperties_ex01.py
# Description: Print direction setting for the network dataset.

import arcpy
import sys

# Set the workspace
arcpy.env.workspace = "C:/Data/SanFrancisco.gdb/Transportation"

# Create Describe object for the network dataset
desc = arcpy.Describe("Streets_ND")

#Get the direction object
if desc.supportsDirections:
    direction = desc.directions
else:
    #If the directions are not set for the network dataset, exit 
    print "No direction information"
    sys.exit() 

print "Direction Information ----" 
print "Length attribute name: " , direction.lengthAttributeName 
print "Time attribute name: " , direction.timeAttributeName 
print "Road Class attribute name: " , direction.roadClassAttributeName 
print "Default Output Length Units: " , direction.defaultOutputLengthUnits 
print "Signpost Feature Class: " , direction.signPostFeatureClassName 
print "Signpost Streets Table: " , direction.signpostStreetsTableName