arcgis关键点提取

在ArcGIS中，可以使用ArcCatalog、ArcMap和ArcToolbox来实现关键点提取。这三个组件是构成完整GIS的关键内容。

在脚本文件中，可以使用以下代码来实现关键点提取：

import arcpy
from arcpy import env
from arcpy.sa import *

point = arcpy.GetParameterAsText(0) # 用于提取点的shp
inputwork = arcpy.GetParameterAsText(1) # 输入的要提取点的数据
workPath = arcpy.GetParameterAsText(2) # 输出的位置

arcpy.env.workspace = inputwork
rasters = arcpy.ListRasters("*", "tif")

for raster in rasters:
    outPath = workPath + "\\" + str(raster).replace('.tif','') + ".shp"
    ExtractValuesToPoints(point, raster, outPath)

另外，也可以直接使用Python的arcpy环境或ARCGIS内置代码编辑器来实现关键点提取，代码如下：

import arcpy
from arcpy import env
from arcpy.sa import *

arcpy.CheckOutExtension("spatial")
arcpy.gp.overwriteOutput = 1

arcpy.env.workspace = r"G:\PRE2007/" #环境
outpath = r"G:\site\POINT_PRE2007/" #存储
inMask = r"G:\site\site.shp" #需提取shp点

rasters = arcpy.ListRasters("*", "tif")

for raster in rasters:
    outPath = outpath + "\\" + str(raster).replace('.tif','') + ".shp"
    ExtractValuesToPoints(inMask, raster, outPath)

print("All project is OK")

这些代码可以将栅格数据中的值提取到点图层中，实现关键点的提取操作。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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