System Junction Source

描述

提供有关网络数据集中系统交汇点源的信息。

属性

属性	说明	数据类型
name (只读)	与该网络源相关的要素类名称。	String
sourceID (只读)	网络数据集内此网络源的唯一标识符。	Integer
sourceType (只读)	网络源类型。此属性返回以下关键字： EdgeFeature JunctionFeature SystemJunction TurnFeature NetworkSource	String
elementType (只读)	网络源的网络元素类型。此属性返回以下关键字： 边 交汇点 转弯	String
elevationFieldName (只读)	确定重合顶点处的连通性时，用作高程字段的字段名。	String

代码示例

系统交汇点源属性示例

显示网络数据集中系统交汇点源的信息。

# Name: NDSSystemJunctionSourceProperties_ex01.py
# Description: Print the information about the system junction sources
#              defined for the network dataset

import arcpy
import sys

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

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

justify = 35
print("------- System junction source")

#SDC network datasets do not have system junction source.
networktype = desc.networkType
if networktype.lower() == "sdc":
    print("%*s" % (justify, "(No system junction source)"))
    sys.exit(0)

#Get the system junction source for the network dataset.
sjSource = desc.systemJunctionSource
if not sjSource:
    print("%*s" % (justify, "(No system junction sources)"))
    sys.exit(0)

print("%*s: %s" % (justify, "Source Name" , sjSource.name))
print("%*s: %s" % (justify, "Source ID" , str(sjSource.sourceID)))
print("%*s: %s" % (justify, "Source Type", sjSource.sourceType))
print("%*s: %s" % (justify, "Element Type", sjSource.elementType))
print(" %*s: %s" % (justify, "Elevation Field",sjSource.elevationFieldName))
print(" ")