擦除点 (编辑)
摘要
从输入中删除移除要素之内或之外的点,具体取决于操作类型。
插图
用法
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要删除移除要素内部或边界上的点,请使用操作类型 INSIDE。要删除移除要素外部的点,请使用操作类型 OUTSIDE。
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对于多点输入要素,将仅删除移除要素之内或之外的点,具体取决于操作类型。
警告:
此工具用于修改输入数据。有关详细信息以及避免数据被意外更改的策略,请参阅无输出的工具。
语法
ErasePoint_edit (in_features, remove_features, {operation_type})
参数 | 说明 | 数据类型 |
in_features |
输入点要素。 | Feature layer |
remove_features |
将删除“移除要素”之内或之外的输入要素,具体取决于“操作类型”参数。 | Feature Layer |
operation_type (可选) |
确定是删除“移除要素”之内还是之外的点。
| String |
代码示例
ErasePoint 示例 1(独立脚本)
# Name: ErasePoint_Example.py # Description: Erase points inside polygon features # Requirements: # Author: ESRI import arcpy from arcpy import env env.workspace="C:/data" inFeatures="wells.shp" removeFeatures="land.shp" operationType="INSIDE" try: arcpy.ErasePoint_edit(inFeatures, removeFeatures, operationType) except Exception, e: # If an error occurred, print line number and error message import traceback, sys tb = sys.exc_info()[2] print "Line %i" % tb.tb_lineno print e.message
ErasePoint 示例 2(独立脚本)
以下独立脚本演示了如何使用 ErasePoint 函数。
# Name: ErasePoint_Example2.py # Description: Replacing low resolution elevation points inside # lake areas by high resolution lidar points. # Author: ESRI # Import system modules import arcpy from arcpy import env # Set environment settings env.workspace = "C:/data/Portland.gdb/relief" # Set local variables inElevationFeatures = "elevation_points" inLidarFeatures = "lidar_points" inLakeFeatures = "lakes" # Erase elevation points inside lakes arcpy.ErasePoint_edit(inElevationFeatures, inLakeFeatures, "INSIDE") # Clip lidar points inside lakes arcpy.ErasePoint_edit(inLidarFeatures, inLakeFeatures, "OUTSIDE") # Append the clipped lidar points to the remaining elevation points arcpy.Append_management(inElevationFeatures, inLidarFeatures, "NO_TEST")
ErasePoint 示例(Python 交互式窗口)
以下 Python 窗口脚本演示了如何在立即模式下使用 ErasePoint 函数。
import arcpy arcpy.env.workspace = "C:/data" arcpy.ErasePoint_edit("trees.shp", "park_boundaries", "INSIDE")
环境
相关主题
7/10/2012