删除重复的feature vba VS 删除重复的feature python

VBA：

Sub deleteDuplicatedFeature()

Dim app As IApplication
Set app = Application

Dim pMxDocument As IMxDocument
Set pMxDocument = Application.Document

Dim pMap As IMap
Set pMap = pMxDocument.FocusMap

Dim pFeatureLayer As IFeatureLayer
Set pFeatureLayer = pMap.Layer(0)


Dim pFeatureClass As IFeatureClass
Set pFeatureClass = pFeatureLayer.FeatureClass


Dim pFeatureCursor As IFeatureCursor
Set pFeatureCursor = pFeatureClass.Search(Nothing, False)

Dim pArea As IArea
Dim pRelOp As IRelationalOperator
Dim pFeature As IFeature
Set pFeature = pFeatureCursor.NextFeature

Dim findex As Integer
findex = pFeatureClass.FindField("ifCopyed")

Dim fid As Integer
fid = pFeatureClass.FindField("FID")


Dim pFilter As ISpatialFilter

Dim pFeatureCursorCompared As IFeatureCursor
Dim pFeatureCompared As IFeature
Dim pShapeCompared As IPolygon
Dim pAreaCompared As IArea

 

While Not pFeature Is Nothing
   
   Set pRelOp = pFeature.Shape

   
   Set pFilter = New SpatialFilter

   With pFilter
    Set .Geometry = pFeature.Shape
        .GeometryField = "SHAPE"
        .SpatialRel = esriSpatialRelIntersects
   End With
  
   Set pFeatureCursorCompared = pFeatureClass.Search(pFilter, False)
   Set pFeatureCompared = pFeatureCursorCompared.NextFeature


   
   
    While Not pFeatureCompared Is Nothing
    
        Set pShapeCompared = pFeatureCompared.Shape
        
        If pRelOp.Equals(pShapeCompared) And pFeature.Value(fid) <> pFeatureCompared.Value(fid) Then
    
            pFeatureCompared.Delete   '删除之后，查询可以可以自动调节
            
         End If
   

         
         Set pFeatureCompared = pFeatureCursorCompared.NextFeature
    Wend

   Set pFeature = pFeatureCursor.NextFeature
Wend

Python：

#run this program at arcgis10.0 environment please

import arcpy

fc = "D:Output.shp"  #change to your own shapefile

desc = arcpy.Describe(fc)

shapefieldname = desc.ShapeFieldName

rows = arcpy.SearchCursor(fc)

for row in rows:
    rows2 = arcpy.UpdateCursor(fc) 
    for row2 in rows2:
        if row.getValue(shapefieldname).equals(row2.getValue(shapefieldname)) and row.getValue("FID") != row2.getValue ("FID"):
            rows2.deleteRow(row2)
    del row2       

del rows

区别：

1 vba繁琐，python简洁

2 vba要用到接口跳转，python没有接口概念，只有类或者函数

3 vba使用变量要先声明，python直接使用，不用声明

4 vba在arcgis10以后不支持了，python会被支持，而且python用途非常之广

5 vba和arcengine中思路非常类似，python开辟了一些新的思路，就像当初接触arcserver javascript api带来的新思路一样

6 vba可以继续使用，大力使用python

7 vba中缩进没有含义，python中缩进具有语法含义

8 vba中的循环和判断语句有开头和结尾（for......end,if......end），python中循环和判断语句有冒号（：）

文章来源：http://www.cnblogs.com/zhangjun1130/archive/2012/10/16/2726000.html