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Re: [Fwd: Re: THREDDS and grib]
- Subject: Re: [Fwd: Re: THREDDS and grib]
- Date: Thu, 6 Mar 2008 10:24:36 -0700 (MST)
On Wed, 5 Mar 2008, Ethan Davis wrote:
Hi guys,
Kevin at PMEL is trying to aggregate some GRIB files and running into
problems.
I have some sample files at /home/edavis/kevinGribData.
When I open them up in ToolsUI, I see a proj0 and proj1 structure. They each
have a latLonCoordSys variable but I don't see a difference between them.
Ethan,
there is a minor differance in the projections, ie p1.Lo1 != p2.Lo1.
That's enough to cause problems in an aggregation.
--------------------------------------------------------------------
GDSkey = 2494715761
La1 = -74.5
Lo1 = 0.5
La2 = 64.499
Lo2 = 359.5
--------------------------------------------------------------------
GDSkey = 2548847210
La1 = -74.0
Lo1 = 1.0
La2 = 64.999
Lo2 = 360.0
Before the aggreagtion could occur, some of the grid parameter would have
to be reprojected to the other grid co-ordinates or the parameters would
have to be seperated out into files according to co-ordinates and then
aggregated.
Robb...
I'm
guessing this is confusing the aggregation. Are there actually two different
projections in each file or is the GRIB library or IOSP mapping things
poorly?
Could you take a look at these files and let me know what is up?
Thanks,
Ethan
--
Ethan R. Davis Telephone: (303) 497-8155
Software Engineer Fax: (303) 497-8690
UCAR Unidata Program Center E-mail: address@hidden
P.O. Box 3000
Boulder, CO 80307-3000 http://www.unidata.ucar.edu/
---------------------------------------------------------------------------
===============================================================================
Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
address@hidden WWW: http://www.unidata.ucar.edu/
===============================================================================
