The Landsat 7 Processing System (LPS) processes Landsat 7 Enhanced Thematic Mapper Plus (ETM+) instrument data into large, contiguous segments called "subintervals". The LPS-processed subinterval products must be subsetted and reformatted before the Lelve 1 processing systems c an ingest them. The initial full subintervals produced by the LPS are stored mainly in HDF Earth Observing System (HDF-EOS) format, an exension to the Hierarchical Data Format (HDF). The final L0R products are stored in native HDF. The HDF and HDF-EOS application programming interfaces (APIs) can be used for extensive data subsetting and data reorganization. How the HDF and HDF-EOS APIs amy be used to efficiently subset, format, and organize Landsat 7 L0R data to create various configurations of L0R products is discussed.
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