ArcGISEngine实现栅格数据裁剪

ArcGIS空间分析扩展模块提供了对栅格数据进行裁剪抽取操作的功能，在ArcGISEngine中可以调用相关的GP工具来对栅格数据操作。

•  调用空间分析ArcToolbox中Extract     By Polygon工具

privatevoid ExtractByPolygon()

       
{

           
IVariantArray parameters =
newVarArrayClass();

           
string sDocPath =
@”C:\filerastergdb.gdb\raster”;     
//地图文档路径

           
string sDocPath1 =
@”C:\filerasteroutput.gdb\outraster”;

           parameters.Add(sDocPath);

           

           
string ss1 =
“‘545160.9444639276.889′;’545216.242 4639266.57’;’545227.355 4639308.375′”;;

           parameters.Add(ss1);

           parameters.Add(sDocPath1);

           parameters.Add(“INSIDE”);

           
IGeoProcessor2 gp =
newGeoProcessorClass();

           gp.OverwriteOutput =
true;

           
IGeoProcessorResult pResult =
null;

           
try

           
{

               
pResult =gp.Execute(“ExtractByPolygon”, parameters,
null);

               
IWorkspaceFactory pFWSF =
new ESRI.ArcGIS.DataSourcesGDB.FileGDBWorkspaceFactoryClass();

               ESRI.ArcGIS.Geodatabase.IWorkspace pWS = pFWSF.OpenFromFile(@”C:\filerasteroutput.gdb”,
0) ;

               ESRI.ArcGIS.Geodatabase.IRasterWorkspaceEx pRasterWs = pWS
asESRI.ArcGIS.Geodatabase.IRasterWorkspaceEx;

               
IRasterDataset pRasterDataset =pRasterWs.OpenRasterDataset(“outraster”);

               
IRasterLayer pRasterLayer =
newRasterLayerClass();

               pRasterLayer.CreateFromDataset(pRasterDataset);

            
   axMapControl1.AddLayer(pRasterLayer);

               
string mess =
null;

               
for (int k = 0; k < gp.MessageCount; k++)

               
{

                   
mess+= gp.GetMessage(k) + “\n”;

               
}

               
MessageBox.Show(mess);

           
}

           
catch (Exception err)

           
{

               
string msg = err.Message;

               
string mess =
null;

               
for (int k = 0; k < gp.MessageCount; k++)

               
{

                   
mess+= gp.GetMessage(k) + “\n”;

               
}

               
MessageBox.Show(mess);

           
}

       
}

 

• 调用IExtractionOp接口对栅格数据裁剪

       
publicvoid ExtractionRasterData(IGeoDataset pGeoDataset, ESRI.ArcGIS.Geometry.IPolygon
pPolygone, bool binside)

       
{

           ESRI.ArcGIS.SpatialAnalyst.IExtractionOp pExtractionOp =
new ESRI.ArcGIS.SpatialAnalyst.RasterExtractionOpClass();

           ESRI.ArcGIS.Geodatabase.IGeoDataset pGeoOutput = pExtractionOp.Polygon(pGeoDataset, pPolygone,binside);

       
}

转载自：https://blog.csdn.net/SYDBC/article/details/17120085