使用ArcGIS Engine进行空间插值代码
时间: 2024-01-15 13:02:46 浏览: 31
以下是一个使用ArcGIS Engine进行空间插值的示例代码:
```csharp
// 加载插值数据
Type factoryType = Type.GetTypeFromProgID("esriDataSourcesRaster.RasterWorkspaceFactory");
IWorkspaceFactory workspaceFactory = (IWorkspaceFactory)Activator.CreateInstance(factoryType);
IWorkspace workspace = workspaceFactory.OpenFromFile(@"C:\Data", 0);
IRasterWorkspace rasterWorkspace = (IRasterWorkspace)workspace;
IRasterDataset inputRasterDataset = rasterWorkspace.OpenRasterDataset("input.tif");
// 设置插值方法和参数
IInterpolationOp interpolationOp = new RasterInterpolationOpClass();
object missing = Type.Missing;
IRasterAnalysisEnvironment rasterAnalysisEnv = (IRasterAnalysisEnvironment)interpolationOp;
rasterAnalysisEnv.OutSpatialReference = inputRasterDataset.SpatialReference;
rasterAnalysisEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, 10.0);
IRasterProps rasterProps = (IRasterProps)inputRasterDataset.CreateDefaultRaster();
IGeoDataset geoDataset = (IGeoDataset)inputRasterDataset;
IEnvelope extent = geoDataset.Extent;
IRasterRadius radius = new RasterRadiusClass();
radius.SetVariable(10, ref missing);
object power = 2;
IVector3D v3D = new Vector3DClass();
v3D.SetCoords(0, 0, 1);
ISpatialReference outputSR = null;
IEnumRasterBand rasterBand = inputRasterDataset.RasterBands;
int bandCount = rasterBand.Count;
IRasterBandCollection rasterBandCollection = new RasterClass();
IRasterBand rasterBandInfo = rasterBand.Next();
for (int i = 0; i < bandCount; i++)
{
rasterBandCollection.AppendBand(rasterBandInfo);
rasterBandInfo = rasterBand.Next();
}
IRasterDataset outRasterDataset = interpolationOp.IDW(rasterBandCollection, power, radius, ref missing);
// 保存插值结果
IRasterWorkspace2 rasterWorkspace2 = (IRasterWorkspace2)workspace;
string outRasterName = "output.tif";
IWorkspaceName workspaceName = rasterWorkspace2.FullName;
IName name = workspaceName.ParseName(outRasterName);
IRasterDatasetName rasterDatasetName = (IRasterDatasetName)name;
IRasterDataset outRasterDataset2 = (IRasterDataset)outRasterDataset;
IDatasetName datasetName = (IDatasetName)rasterDatasetName;
datasetName.WorkspaceName = workspaceName;
datasetName.Name = outRasterName;
IWorkspace ws = workspaceName.Open();
IRasterCatalog rasterCatalog = ((IRasterWorkspaceEx)ws).OpenRasterCatalog("");
IRasterDataset rasterDataset = rasterCatalog.CreateRasDataset(datasetName.Name, "");
IRasterDataset2 rasterDataset2 = (IRasterDataset2)rasterDataset;
rasterDataset2.CreateFromDataset(outRasterDataset2);
```
这段代码使用IDW插值对一个名为"input.tif"的栅格数据进行插值,并将结果保存为"output.tif"。可以根据需要调整插值方法和参数。