桌面ArcGIS包含800多種可在Python指令碼中執行的地理處理工具。

通過Python指令碼來執行地理處理工具，可以處理複雜的工作和執行批處理任務。

案例一：使用指令碼執行地理處理工具（以裁剪為例） 

 檢視幫助文件模仿的程式碼：

 1 # Name: Clip_Example2.py
 2 
 3 # Description: Clip major roads that fall within the study area.
 4 
 5 
 6 # Import system modules
 7 
 8 import arcpy
 9 
10 from arcpy import env
11 
12 
13 # Set workspace
14 
15 env.workspace = "F:\【the_path_of_grace】\ArcpyBook"
16 
17  
18 # Set local variables
19 
20 in_features = "data/CityOfSanAntonio.gdb/Burglary"
21 
22 clip_features = "Ch5/EdgewoodSD.shp"
23 
24 out_feature_class = "Ch5/ClpBurglary.shp"
25 
26 xy_tolerance = ""
27 
28 
29 # Execute Clip
30 
31 arcpy.Clip_analysis(in_features, clip_features, out_feature_class, xy_tolerance)

工作原理：

在Python指令碼中，可以參照<toolname>_<toolboxalias>語法來呼叫工具。

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緩衝區分析->②建立要素圖層->③按位置選擇圖層

檢視幫助文件模仿的程式碼：

 1 # Import system modules
 2 import arcpy
 3 from arcpy import env
 4 
 5 # Set workspace
 6 env.workspace = "F:\【the_path_of_grace】\ArcpyBook\data\TravisCounty"
 7 try:
 8 # Buffer areas of impact around major roads
 9     streams = "Streams.shp"
10     streamsBuffer = "StreamsBuffer"
11     distanceField = "2640 Feet"
12     sideType = "FULL"
13     endType = "ROUND"
14     dissolveType = "ALL"
15     schools2mile = "Schools.shp"
16     schoolsLyrFile = 'Schools2Mile_lyr'
17     
18     arcpy.Buffer_analysis(streams, streamsBuffer, distanceField,sideType,endType,dissolveType)
19 
20 # First, make a layer from the feature class
21     arcpy.MakeFeatureLayer_management(schools2mile, schoolsLyrFile)
22 
23 # Then add a selection to the layer based on location to features in another feature class 
24     arcpy.SelectLayerByLocation_management (schoolsLyrFile, "intersect", streamsBuffer)
25 except Exception as e:
26     print e.message 

 執行過程：

效果圖：

謝謝觀看！

&n