使用python腳本執行地理處理工具

桌面ArcGIS包含800多種可在Python腳本中運行的地理處理工具。

通過Python腳本來運行地理處理工具，可以處理復雜的工作和執行批處理任務。

案例一：使用腳本執行地理處理工具（以裁剪為例） 

 

 

 

 查看幫助文檔模仿的代碼：

# Name: Clip_Example2.py

# Description: Clip major roads that fall within the study area.


# Import system modules

import arcpy

from arcpy import env


# Set workspace

env.workspace = "F:\【the_path_of_grace】\ArcpyBook"

 
# Set local variables

in_features = "data/CityOfSanAntonio.gdb/Burglary"

clip_features = "Ch5/EdgewoodSD.shp"

out_feature_class = "Ch5/ClpBurglary.shp"

xy_tolerance = ""


# Execute Clip

arcpy.Clip_analysis(in_features, clip_features, out_feature_class, xy_tolerance)

 

工作原理：

在Python腳本中，可以參照<toolname>_<toolboxalias>語法來調用工具。

注：toolboxalias是工具箱的別名

拓展：

 

 

效果圖：

 

 

 

案例二：將一個工具的輸出作為另一個工具的輸入

步驟：①緩沖區分析->②創建要素圖層->③按位置選擇圖層

 

 

查看幫助文檔模仿的代碼：

# Import system modules
import arcpy
from arcpy import env

# Set workspace
env.workspace = "F:\【the_path_of_grace】\ArcpyBook\data\TravisCounty"
try:
# Buffer areas of impact around major roads
    streams = "Streams.shp"
    streamsBuffer = "StreamsBuffer"
    distanceField = "2640 Feet"
    sideType = "FULL"
    endType = "ROUND"
    dissolveType = "ALL"
    schools2mile = "Schools.shp"
    schoolsLyrFile = 'Schools2Mile_lyr'
    
    arcpy.Buffer_analysis(streams, streamsBuffer, distanceField,sideType,endType,dissolveType)

# First, make a layer from the feature class
    arcpy.MakeFeatureLayer_management(schools2mile, schoolsLyrFile)

# Then add a selection to the layer based on location to features in another feature class 
    arcpy.SelectLayerByLocation_management (schoolsLyrFile, "intersect", streamsBuffer)
except Exception as e:
    print e.message 

 執行過程：

效果圖：

 

 

 

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