升级网络 (网络分析)

摘要

升级网络数据集的方案。通过升级网络数据集，可以使网络数据集使用当前版本的软件所提供的新功能。

用法

• 升级网络数据集之前，必须首先使用升级地理数据库(Geodatabase) 工具将地理数据库升级到当前版本。

语法

UpgradeNetwork_na (in_network_dataset)

参数	说明	数据类型
in_network_dataset	要升级的网络数据集。网络数据集必须是基于地理数据库的网络数据集。	Network Dataset Layer

代码示例

UpgradeNetwork 示例 1（Python 窗口）

使用所有参数执行工具。

import arcpy
arcpy.env.workspace = "C:/Data/Socal.gdb"
arcpy.UpgradeNetwork_na("Transportation/Streets_ND")

UpgradeNetwork 示例 2（工作流）

以下独立 Python 脚本演示了如何使用 UpgradeNetwork 工具升级网络数据集方案。

# Name: UpgradeNetwork_Workflow.py
# Description: Upgrades the schema of a network dataset by first upgrading the 
#              geodatabase containing the network dataset and then upgrading the
#              network dataset. The network dataset is also built so that it can
#              be used to perform network analyses.
# Requirements: Network Analyst Extension 

#Import system modules
import arcpy
from arcpy import env

try:
    #Check out the Network Analyst extension license
    arcpy.CheckOutExtension("Network")

    #Set environment settings
    env.workspace = "C:/data/RhodeIsland.gdb"
    env.overwriteOutput = True
    
    #Set local variables
    #inNetworkDataset = "Transportation/Streets_ND"
    inNetworkDataset = "RhodeIsland/RhodeIsland_ND"
    
    #Before upgrading the network dataset, upgrade the file GDB that contains
    #the network dataset
    arcpy.UpgradeGDB_management(env.workspace)
    
    #Upgrade the network dataset
    arcpy.UpgradeNetwork_na(inNetworkDataset)
    
    #The upgraded network dataset is not built. So build the network dataset
    arcpy.BuildNetwork_na(inNetworkDataset)
    
    print "Script completed successfully"

except Exception as e:
    # If an error occurred, print line number and error message
    import traceback, sys
    tb = sys.exc_info()[2]
    print "An error occured on line %i" % tb.tb_lineno
    print str(e)

环境

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