9/2005, 11/2006, 9/2013, 6/2016

                    wgrib2's copyrights and licences

wgrib2 is comprised of components of varying copyrights and licences.


                               Libraries

aec(compressioin): BSD 2-clause license, DWD
gctpc(geolocation): public domain, USGS
g2clib(grib): public domain, NCEP/NOAA
HDF (used by netcdf4): HDF license
iplib(interpolation): public domain, NCEP/NOAA
jasper(jpeg2000): IMAGE POWER JPEG-2000 PUBLIC LICENSE
libpng: libpng license
mysql: used if mysql is installed, see mysql code (not supplied)
netcdf: netcdf license, UCAR
PROJ.4(geolocation): MIT style licence
zlib(compression): zlib license

Except for gctpc (public domain), all the above libraries are optional.
Of course, you may loose support some functionality.

                  wgrib2 *.c *.h *.sh and documentation


The components of wgrib2, the C/Fortran API and wgrib2 library are either in 
the public domain or covered by the GNU General Public License depending on 
the files in question.  No other licence will be accepted into this archive 
of wgrib2 modules.  (Already have too many licences for the libraries.)  Unlike
the situation with the libraries, it would be difficult to make a PD-only
version of wgrib2.

Distribution of wgrib2 needs to be compatible with all applicatable licences.


                         Contributing to wgrib2


Contributions of new files can either be public domain or GNU GPL.
If you modify an existing file, please state that your contribution
is of the same (gnu or public domain) as the original file.  Otherwise
it gets messy.