Accessing a raster dataset or raster catalog
A raster dataset can be stored as file based or in a geodatabase. However, a raster catalog can only be stored in a geodatabase. There is a difference between accessing a file-based raster dataset and a raster dataset in a geodatabase.
When accessing a file-based raster dataset, IRasterWorkspace is used. See the following code example:
[Java]
static IRasterDataset openFileRasterDataset(String folderName, String datasetName)
throws Exception{
// Open raster file workspace.
IWorkspaceFactory workspaceFactory = new RasterWorkspaceFactory();
IRasterWorkspace rasterWorkspace = new IRasterWorkspaceProxy
(workspaceFactory.openFromFile(folderName, 0));
// Open file raster dataset.
IRasterDataset rasterDataset = rasterWorkspace.openRasterDataset(datasetName);
return rasterDataset;
}
When accessing a raster dataset in a geodatabase, IRasterWorkspaceEx should be used. See the following code example:
[Java]
static IRasterDataset openGDBRasterDataset(IRasterWorkspaceEx rasterWorkspaceEx,
String datasetName)throws Exception{
// Open a raster dataset in a geodatabase including PGDB, FGDB, and
// ArcSDE.
return rasterWorkspaceEx.openRasterDataset(datasetName);
}
A raster catalog can only be stored in a geodatabase. See the following code example:
[Java]
static IRasterCatalog openRasterCatalog(IRasterWorkspaceEx rasterWorkspaceEx, String
catalogName)throws Exception{
// Open a raster catalog in a geodatabase including PGDB, FGDB, and
// ArcSDE.
return rasterWorkspaceEx.openRasterCatalog(catalogName);
}
See Also:
How to access a raster dataset in a raster catalog| Development licensing | Deployment licensing |
|---|---|
| ArcView | ArcView |
| ArcEditor | ArcEditor |
| ArcInfo | ArcInfo |
| Engine Developer Kit | Engine Runtime |