hdftopal, paltohdf - convert between a palette in an HDF file and a raw
palett e in a non-HDF file
hdftopal hdf-pallette-file raw-pallette-file
paltohdf raw-pallette-file hdf-pallette-file
hdftopal converts a palette in an HDF file to a raw palette in an non-
HDF file. The raw palette will have 768 bytes with the first 256 bytes
representing red intensity values, the second 256 bytes representing
green intensity values, and the third 256 bytes representing blue
paltohdf performs the converse conversion, from raw palette data to the
HDF palette format. The raw palette data must have 768 bytes organized
in the following order: first, 256 contiguous red intensity values,
then 256 contiguous green intensity values, then 256 contiguous blue
intensity values. The palette in the HDF file will have the RGB values
pixel-interlaced, as follows:
red-value green-value blue-value red-value green-value blue-value...
This is the standard HDF format for 8-bit palettes.
If an HDF palette format file is specified that doesn’t exist, it is
created before the converted data is stored. If an HDF palette format
file is specified that already exists, the converted data is appended
to the file.
November 6, 1999