There was some question as to how well Bzip2 would compress floating
point data. We just did a test on a large NetCDF file, containing a
years worth of global, 1-degree six-hourly pressure fields, so that
the data is floating point. here are the sizes from a Unix ls
command (i.e in 512 byte units).
raw.nc 380,551,616
raw.nc.Z 143,716,211
raw.nc.bz2 55,633,062
Bzip2 gave about the same 7:1 compression that Russ reported, and
roughly 3 times better that Unix compress.
-Roy Mendelssohn
--
Roy Mendelssohn
Pacific Fisheries Environmental Group
1352 Lighthouse Avenue
Pacific Grove, CA 93950-2097
e-mail: rmendels@xxxxxxxxxxxxx
voice: (831)-648-9029
fax: (831)-648-8440
www: http://www.pfeg.noaa.gov/
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