How to access HDF subdatasets

Summary Some raster formats can contain multiple subdatasets inside a single file; for example, the Hierarchical Data Format (HDF). The code example in this article shows how you can retrieve the HDF subdatasets using the IRasterDatasetJukebox interface.

Accessing HDF subdatasets

[Java]


        static IRasterDataset HDFSubdataset(IRasterDataset rasterDataset, int subsetID)
    throws Exception{
    //RasterDataset represents a raster dataset from a HDF4 file.
    IRasterDatasetJukebox hdfDataset = new IRasterDatasetJukeboxProxy(rasterDataset);
    IRasterDataset subDatasset;
    int datasetCount = hdfDataset.getSubdatasetCount();
    if (subsetID < datasetCount){
        hdfDataset.setSubdataset(subsetID);
        subDatasset = new IRasterDatasetProxy(hdfDataset);
        return subDatasset;
    }
    else{
        return rasterDataset;
    }
}

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