用（AE+C#）和ArcGIS中设置IDW插值后的栅格的空间范围

本文主要是介绍用（AE+C#）和ArcGIS中设置IDW插值后的栅格的空间范围，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

在AE中我想用IRasterAnalysisEnvironment接口的SetExtent方法来设置范围，虽然没报错，但是还是原先的样子。

private void toolStripMenuItem9_Click(object sender, EventArgs e){IInterpolationOp pInterpolationOp;pInterpolationOp = new RasterInterpolationOpClass();IFeatureClass pFeatureClass;//进行插值的图层pFeatureClass = pTocFeatureLayer.FeatureClass;//根据范围矢量图层的名称获取其序号ind = OperateMap.GetLayerIndexByName(mainMapControl, "乡镇复制_pro");IFeatureLayer featureLayer = this.mainMapControl.Map.get_Layer(ind) as IFeatureLayer;//点图层在axMapControl控件的第一个，索引为0//设置搜索半径，本例为12IRasterRadius pRadius;pRadius = new RasterRadiusClass();object maxDistance = Type.Missing;pRadius.SetVariable(12, ref maxDistance);//设置进行插值的属性字段IFeatureClassDescriptor pFCDescriptor;pFCDescriptor = new FeatureClassDescriptorClass();string FieldName = " ";//注意，引号内为Idw插值中的Z值，即属性表中要进行对其进行插值的字段名pFCDescriptor.Create(pFeatureClass, null, FieldName);//设置输出像元大小 IRasterAnalysisEnvironment pEnv;pEnv = new RasterAnalysis();object dCellSize = 144.337439931631;//设置像元值（参考ARCMAP)pEnv = pInterpolationOp as IRasterAnalysisEnvironment;pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCellSize);object objectbarrier = Type.Missing;//设置空间处理范围object extent;IGeoDataset geo = featureLayer.FeatureClass as IGeoDataset;//featureLayer为“乡镇复制”extent = geo.Extent;pEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extent, ref maxDistance);//执行IDW，并输出栅格IGeoDataset rasDataset;rasDataset = pInterpolationOp.IDW((IGeoDataset)pFCDescriptor, 2, pRadius, ref objectbarrier);IRaster pOutRaster;pOutRaster = rasDataset as IRaster;pOutRasLayer = new RasterLayerClass();pOutRasLayer.CreateFromRaster(pOutRaster);this.mainMapControl.AddLayer(pOutRasLayer, 0);// 输出结果至axMapControl1,并放置在第一层mainMapControl.ActiveView.Refresh();//刷新视图}