Network Directions Attribute Mapping

摘要

Network Directions Attribute Mapping 对象提供有关网络数据集中描述符属性的信息，这些属性将被映射到网络数据集方向配置中的特定属性。

属性

属性	说明	数据类型
attribute (只读)	映射到由 key 属性所描述的方向属性的网络属性名称。	String
key (只读)	网络数据集属性所映射到的网络数据集方向属性的名称。	String

代码示例

网络方向属性映射属性示例

打印网络数据集的方向属性映射属性。

# Name: NDSDirectionsAttributeMapping_ex01.py
# Description: Print information about the directions attribute mappings
#              for the network dataset.
import arcpy
import sys
network = r"C:/Data/NetworkDatasetWithDirections.gdb/Transportation/Streets_ND"
# Create Describe object for the network dataset
desc = arcpy.Describe(network)
# If the directions are not set for the network dataset, exit
if not desc.supportsDirections:
    print("No direction information")
    sys.exit()
# Get all the network's directions properties
directions = desc.directions
# Loop through the attribute mappings
if hasattr(directions, "attributeMappings"):
    attrMappings = directions.attributeMappings
    for mapping in attrMappings:
        print("\nKey:", mapping.key)
        print("Attribute:", mapping.attribute)
else:
    print("Network dataset does not contain directions attribute mappings.")