ArcGIS Engine 10 开发手册(8-15)示例：密度分析

密度分析的对象为 RasterDensityOp，而该对象实现了 IDensityOp 接口，该接口里面定义了密度分析的 几种方法，比如点密度，核密度等，如下图：

示例代码

public IRaster DensityAnalyst (IFeatureClass pFeatureClass, string pFieldName, double pCellSize, double pRadius)

{

  //辅助对象,设置密度分析时候的参数

  IFeatureClassDescriptor pFDescr = new FeatureClassDescriptorClass ();
  pFDescr.Create (pFeatureClass, null, pFieldName);

  IDensityOp pDensityOp = new RasterDensityOpClass ();

  //设置环境

  IRasterAnalysisEnvironment pEnv = pDensityOp as IRasterAnalysisEnvironment;

  object object_cellSize = (System.Object) pCellSize;
  pEnv.SetCellSize (esriRasterEnvSettingEnum.esriRasterEnvValue, ref object_cellSize);

  System.Double double_radio_dis = pRadius;

  object object_radio_dis = (System.Object) double_radio_dis;
  object Missing = Type.Missing;

  //核函数密度制图方法生成栅格数据

  IRaster pRaster = pDensityOp.KernelDensity (pFDescr as IGeoDataset, ref object_radio_dis, ref Missing) as IRaster;

  return pRaster;

}

运行结果

ArcGIS Engine 10 开发手册全集

ArcGIS Engine 10 开发手册全集： ArcGIS Engine 10 开发手册