1.创建新的镶嵌数据集。
///
/// 创建镶嵌数据集
///
/// 工作空间
/// 名称
/// 空间参考
/// 镶嵌数据集
public static IMosaicDataset CreateMosaicDataset(IWorkspace pFgdbWorkspace, string pMDame, ISpatialReference pSrs)
{
try
{
IWorkspaceFactory pWorkspaceFactory = new FileGDBWorkspaceFactory();
ICreateMosaicDatasetParameters pCreationPars = new CreateMosaicDatasetParametersClass();
pCreationPars.BandCount = 3;
pCreationPars.PixelType = rstPixelType.PT_UCHAR;
IMosaicWorkspaceExtensionHelper pMosaicExentionHelper = new MosaicWorkspaceExtensionHelperClass();
IMosaicWorkspaceExtension pMosaicExtention = pMosaicExentionHelper.FindExtension(pFgdbWorkspace);
return pMosaicExtention.CreateMosaicDataset(pMDame, pSrs, pCreationPars, "DOM");
}
catch (Exception)
{
return null;
}
}2.获取已有镶嵌数据集
///
/// 获取镶嵌数据集
///
/// 数据集名称
/// 数据集所在工作空间
/// 镶嵌数据集
public static IMosaicDataset GetMosaicDataset(string MosaicName, IWorkspace workspace)
{
IMosaicDataset pMosicDataset = null;
IMosaicWorkspaceExtensionHelper pMosaicWsExHelper = new MosaicWorkspaceExtensionHelperClass();
IMosaicWorkspaceExtension pMosaicWsExt = pMosaicWsExHelper.FindExtension(workspace);
if (pMosaicWsExt != null)
{
try
{
pMosicDataset = pMosaicWsExt.OpenMosaicDataset(MosaicName);
}
catch (Exception ex)
{
return pMosicDataset;
}
}
return pMosicDataset;
}
3.获取已有镶嵌数据表
///
/// 获取镶嵌数据表
///
/// 镶嵌数据集
/// 镶嵌数据表
public static ITable GetMosaicDatasetTable(IMosaicDataset pMosaicDataset)
{
ITable pTable = null;
IEnumName pEnumName = pMosaicDataset.Children;
pEnumName.Reset();
ESRI.ArcGIS.esriSystem.IName pName;
while ((pName = pEnumName.Next()) != null)
{
pTable = pName.Open() as ITable;
int i = pTable.Fields.FieldCount;
if (i >= 21) break;
}
return pTable;
}
4.删除某个镶嵌数据集
///
/// 删除镶嵌数据集
///
/// 名称
/// 工作空间
/// 删除成功时返回true,否则返回false
public static bool DeleteMosaic(string rasterName, IWorkspace workspace)
{
try
{
IMosaicWorkspaceExtensionHelper pMosaicWsExHelper = new MosaicWorkspaceExtensionHelperClass();
IMosaicWorkspaceExtension pMosaicWsExt = pMosaicWsExHelper.FindExtension(workspace);
pMosaicWsExt.DeleteMosaicDataset(rasterName);
return true;
}
catch (Exception ex)
{
return false;
}
}
5.在镶嵌数据集中添加删格数据
///
/// 导入栅格数据
///
/// 导入文件路径
/// 【arcengine镶嵌数据集的基本操作（C#）】镶嵌数据集
public static bool ImportRasterToMosaic(string filePath, IMosaicDataset mosaicDataSet)
{
try
{
IWorkspaceFactory workspaceFactory = new RasterWorkspaceFactoryClass();
IRasterWorkspace rasterWorkspace = workspaceFactory.OpenFromFile(System.IO.Path.GetDirectoryName(filePath), 0) as IRasterWorkspace;
IMosaicDatasetOperation mOp = (IMosaicDatasetOperation)mosaicDataSet;
IAddRastersParameters addRs = new AddRastersParametersClass();
IRasterDatasetCrawler rsDsetCrawl = new RasterDatasetCrawlerClass();
rsDsetCrawl.RasterDataset = rasterWorkspace.OpenRasterDataset(System.IO.Path.GetFileName(filePath));
IRasterTypeFactory rsFact = new RasterTypeFactoryClass();
IRasterType rsType = rsFact.CreateRasterType("Raster dataset");
rsType.FullName = rsDsetCrawl.DatasetName;
addRs.Crawler = (IDataSourceCrawler)rsDsetCrawl;
addRs.RasterType = rsType;
mOp.AddRasters(addRs, null);
//计算cellSize 和边界
// Create a calculate cellsize ranges parameters object.
ICalculateCellSizeRangesParameters computeArgs = new CalculateCellSizeRangesParametersClass();
// Use the mosaic dataset operation interface to calculate cellsize ranges.
mOp.CalculateCellSizeRanges(computeArgs, null);
// Create a build boundary parameters object.
IBuildBoundaryParameters boundaryArgs = new BuildBoundaryParametersClass();
// Set flags that control boundary generation.
boundaryArgs.AppendToExistingBoundary = true;
// Use the mosaic dataset operation interface to build boundary.
mOp.BuildBoundary(boundaryArgs, null);
return true;
}
catch (Exception)
{return false;
} }
6.导出镶嵌数据集
///
/// 导出镶嵌数据集为删格数据
///
/// 数据名称
/// 工作空间
/// 保存路径
/// 成功返回true，失败返回false
public static bool DownLoadMosaic( string RasterName,IWorkspace workspaceDB,string DownLoadLocation)
{
try
{
IWorkspace wsGDB = null;
IWorkspaceFactory workspaceFactory = new FileGDBWorkspaceFactoryClass();
//判断是GDB文件还是普通文件夹
string locationForm =DownLoadLocation.Substring(DownLoadLocation.Length - 4, 4).ToUpper();
if (locationForm == ".GDB")
{
wsGDB = workspaceFactory.OpenFromFile(@"" + DownLoadLocation, 0);
}
else
{
IRasterWorkspace rasterWorkspace = SetRasterWorkspace(DownLoadLocation);
wsGDB = (IWorkspace)rasterWorkspace;
}
IMosaicWorkspaceExtensionHelper mosaicHelper = newMosaicWorkspaceExtensionHelperClass();
IMosaicWorkspaceExtension mosaicWs = mosaicHelper.FindExtension(workspaceDB);
IMosaicDataset mosaic = mosaicWs.OpenMosaicDataset(RasterName);
IFunctionRasterDataset functionDS = (IFunctionRasterDataset)mosaic;
ISaveAs rasterSaveAs = (ISaveAs)functionDS;
if (locationForm == ".GDB")
{
rasterSaveAs.SaveAs(RasterName, wsGDB, "GDB");
}
else
{
rasterSaveAs.SaveAs(RasterName+".tif", wsGDB, "TIFF");
}return true;
}
catch
{
return false;
}
}
