使用python脚本执行地理处理工具
桌面ArcGIS包含800多种可在Python脚本中运行的地理处理工具。
通过Python脚本来运行地理处理工具,可以处理复杂的工作和执行批处理任务。
案例一:使用脚本执行地理处理工具(以裁剪为例)
查看帮助文档模仿的代码:
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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)
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工作原理:
在Python脚本中,可以参照_语法来调用工具。
注:toolboxalias是工具箱的别名
拓展:
效果图:
案例二:将一个工具的输出作为另一个工具的输入
步骤:①缓冲区分析->②创建要素图层->③按位置选择图层
查看帮助文档模仿的代码:
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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
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执行过程:
效果图:
https://www.cnblogs.com/edcoder/p/11968120.html