ArcMap

橡皮页变换要素

描述

利用指定的橡皮页变换链接，通过橡皮页变换对输入要素进行空间调整修改，从而使输入要素更好地与所需目标要素对齐。

插图

橡皮页变换要素

使用方法

  • 该工具旨在结合生成橡皮页变换链接工具使用。橡皮页变换根据指定的橡皮页变换连接线进行空间校正，从而使输入要素位置更加准确的与目标要素位置对齐。输入链接要素表示常规链接；输入点要素表示在橡皮页变换过程中保持源位置不动的标识链接。输入链接要素与标识链接要素均必须具有 SRC_FID 与 TGT_FID 字段。

  • 方法参数确定用于在橡皮页变换过程中创建临时 TIN 的插值方法。更多详细信息，请参阅关于空间校正橡皮页变换。

    • LINEAR - 该方法用于创建快速的 TIN 表面，但并不真正考虑邻域。此方法速度稍快，并且当许多橡皮页变换链接均匀分布在要调整的数据上时，将生产优质结果。
    • NATURAL_NEIGHBOR - 该方法稍慢，但当橡皮页变换连接线不是很多并且在数据集中较为分散时，得出的结果会更加精确。在这种情况下使用线性法则不够精确。

语法

arcpy.edit.RubbersheetFeatures(in_features, in_link_features, {in_identity_links}, {method})
参数说明数据类型
in_features

要调整的输入要素。可以为点、线或面。

Feature Layer
in_link_features

表示橡皮页变换常规链接的输入线要素。

Feature Layer
in_identity_links
（可选）

表示橡皮页变换识别链接的输入点要素。

Feature Layer
method
（可选）

校正要素所用到的橡皮页变换法。

  • LINEAR —此方法稍快，并且当很多连接线均匀分布在校正的数据上时可以生成不错的结果。这是默认设置。
  • NATURAL_NEIGHBOR —当存在一些间距很远的连接线时应使用该方法。
String

派生输出

名称说明数据类型
out_feature_class

已更新的输入要素。

要素图层

代码示例

RubbersheetFeatures 示例 1（Python 窗口）

以下 Python 窗口脚本演示了如何在即时模式下使用 RubbersheetFeatures 函数。

import arcpy
arcpy.env.workspace = "C:/data"
arcpy.RubbersheetFeatures_edit("source_Roads.shp","rubbersheet_Links.shp",
                               "rubbersheet_Links_pnt.shp", "LINEAR")
RubbersheetFeatures 示例 2（独立脚本）

下面的独立脚本演示了如何在脚本环境中应用 RubbersheetFeatures 函数。

# Name:        RubbersheetFeatures_example_script2.py
# Description: Performs rubbersheeting spatial adjustment using links produced by
#              GenerateRubbersheetLinks, assuming newly updated roads are more
#              accurate than existing base roads. The links go from base road data
#              to corresponding newly updated road data. The links are then
#              analyzed for potential errors; they are finally used to adjust the
#              base roads (a copy is made) to better align with the updated roads.
# Author:      Esri
# -----------------------------------------------------------------------

# Import system modules
import arcpy
from arcpy import env

# Set environment settings
env.overwriteOutput = True
env.workspace = r"D:\conflationTools\ScriptExamples\data.gdb"

# Set local variables
sourceFeatures = "baseRoads"
targetFeatures = "updateRoads"
grlOutput = "grlinks_out"
grlOutputPts = "grlinks_out_pnt"

search_distance = "300 Feet"
match_fields = "FULLNAME RD_NAME"

qaLocations = "qa_locations"

# Generate rubbersheet links
arcpy.GenerateRubbersheetLinks_edit(sourceFeatures, targetFeatures, grlOutput, search_distance, match_fields)

# ====================================================================================
# Note 1:  The result of GenerateRubbersheetLinks may contain errors; see tool reference.
#          Inspection and editing may be necessary to ensure correct links before using
#          them for rubbersheeting.
#
#          One of the common errors are intersecting or touching links. Their locations 
#          can be found by the process below.
# ====================================================================================

# Find locations where links intersect or touch; the result contains coincident points
arcpy.Intersect_analysis(grlOutput, qaLocations, "", "", "POINT")

# Delete coincident points
arcpy.DeleteIdentical_management(qaLocations, "Shape")

# ====================================================================================
# Note 2:  At this point you can manually inspect locations in qaLocations; delete or
#          modify links as needed.
# ====================================================================================

# Make a copy of the sourceFeatures for rubbersheeting
arcpy.CopyFeatures_management(sourceFeatures, "sourceFeatures_Copy")

# Use the links for rubbersheeting
arcpy.RubbersheetFeatures_edit("sourceFeatures_Copy", grlOutput, grlOutputPts, "LINEAR")

环境

许可信息

  • Basic: 否
  • Standard: 否
  • Advanced: 是

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