arcgis二次开发 缓冲区代码

以下是使用ArcGIS二次开发的ArcObjects来实现缓冲区的示例代码：

'获取要素图层
Dim pFeatureLayer As IFeatureLayer = GetFeatureLayer("your_layer_name")

'获取要素选择集
Dim pFeatureSelection As IFeatureSelection = CType(pFeatureLayer, IFeatureSelection)
Dim pSelectionSet As ISelectionSet = pFeatureSelection.SelectionSet

'获取要素游标
Dim pCursor As ICursor
pSelectionSet.Search(Nothing, False, pCursor)

'创建缓冲区
Dim pBufferConstruction As IBufferConstruction = New BufferConstructionClass()
pBufferConstruction.Initialize(10.0) '设置缓冲区半径
Dim pGeometry As IGeometry = pBufferConstruction.Buffer(pCursor.NextRow().Shape)

'将缓冲区保存为新的要素图层
Dim pNewFeatureLayer As IFeatureLayer = CreateFeatureLayer("your_new_layer_name")
Dim pNewFeature As IFeature = pNewFeatureLayer.FeatureClass.CreateFeature()
pNewFeature.Shape = pGeometry
pNewFeature.Store()

'释放资源
System.Runtime.InteropServices.Marshal.ReleaseComObject(pCursor)
System.Runtime.InteropServices.Marshal.ReleaseComObject(pFeatureSelection)
System.Runtime.InteropServices.Marshal.ReleaseComObject(pFeatureLayer)

以上示例代码仅供参考，具体实现方式可能会根据开发需求和具体情况而有所不同。