John, Russ, Mike, Etc
This looks good - just like GRIB packing! Excellent if it makes
HDF/NetCDF <-> GRIB conversions extremely 'thin'.
Chris
Chris Little IT Improvement
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-----Original Message-----
[mailto:owner-netcdf-hdf@xxxxxxxxxxxxxxxx] On Behalf Of John Caron
Sent: 20 July 2004 16:31
try that last part again:
To compute the scale and offset:
add_offset = dataMin
scale_factor = (2^nbits - 2) / (dataMax - dataMin)
The precision of the data will be 1.0 / scale_factor.
To move between packed and unpacked values:
unpacked = (packed == 2^nbits-1) ? missing value : packed *
scale_factor + add_offset
