[ gpsdrive ] grib files

Chris H chris123 at magma.ca
Thu Jul 31 17:45:26 AKDT 2008


Greets:

Since Hamish has worked out a usable solution for non encrypted marine raster 
charts I started exploring the possibility of including grib file (weather 
data) that is freely available on line. A preliminary review of data on the 
net and I came across this post:

http://lists.maptools.org/pipermail/geotiff/2005-September/000162.html

It appears that gdal_translate has the capability of converting NetCDF files 
to geotiff. So the sequence would be something like this> download grib file 
for specific region, convert to NetCDF (available for unix from NOAA), 
convert to geotiff 

Now since gdal is used to prepare NOAA charts for example the same program 
could in theory convert, converted grib files via the process described 
above...theoretically of course.

The only part that is not known to me is if gpsdrive could overlay the grib 
files over the geo referenced chart tiles?? 

Just wondering as it would be a nice addition for marine use and grib files 
are free. See saildocs.com if interested.  If it was possible it would be a 
rather elegant solution for dealing with weather when gpsdrive is used for 
marine applications. 


-- 
/ch


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