Abstract:
h4toh5 is a file conversion utility that reads an HDF4 file, h4file (input.hdf for example), and writes an HDF5 file, h5file (output.h5 for example), containing the same data. If no output file h5file is specified, h4toh5 uses the input filename to designate the output file, replacing the extension .hdf with .h5. For example, if the input file scheme3.hdf is specified with no output filename,
... h4toh5 will name the output file scheme3.h5.
The -h option causes a syntax summary similar to the following to be displayed:
h4toh5
inputfile.hdf
outputfile.h5
h5toh4
inputfile.hdf
Each object in the HDF4 file is converted to an equivalent HDF5 object, according to the mapping described in Mapping HDF4 Objects to HDF5 Objects. (If this mapping changes between HDF5 Library releases, a more up-to-date version may be available at Mapping HDF4 Objects to HDF5 Objects on the HDF FTP server.) 
