Writing NETCDF files form GRADS 1.94b?

[Kevin M Levey]

Hi Arlindo

Yes, thanks for your explanation. Thats how we've been doing it. The
GRADS documentation I referred to is just somewhat misleading.

Perhaps it should state the following:

> The GrADS exectuables for versions 1.9 and earlier are as follows:
> gradsc       Reads GRIB, gridded binary, BUFR, GrADS station data
> Writes GRIB
> gradsnc Reads GRIB, gridded binary, BUFR, GrADS station data, NetCDF
> Writes GRIB, NetCDF (via LATS interface)


Regards

Kevin M Levey, MSc in Oceans and Atmospheric Sciences (University of
Cape Town)
Director of Meteorological Operations
CustomWeather, Inc.
San Francisco, California, USA

"Taking the World by Storm!"

http://www.customweather.com
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email: klevey at customweather.com




On May 20, 2008, at 05/20/08 - 7:17 PM, Arlindo da Silva wrote:

> On Tue, May 20, 2008 at 2:47 PM, Kevin M Levey <klevey at customweather.com
> > wrote:
> TUE 20MAY08: 1140PDT
>
> Dear Grads Users
>
> I was always under the impression that one could NOT write out
> NETCDF files from GRADS directly, but that you had to use LATS4D to
> accomplish this.
>
> However, on the latest update of the GRADS pages found at: http://grads.iges.org/grads/downloads.html
>
> I see this:
>
> The GrADS exectuables for versions 1.9 and earlier are as follows:
> gradsc       Reads GRIB, gridded binary, BUFR, GrADS station data
> Writes GRIB
> gradsnc Reads GRIB, gridded binary, BUFR, GrADS station data, NetCDF
> Writes GRIB, NetCDF
>
> Is this a mistake, and if not, how does one write NETCDF formatted
> output directly from GRADS 1.9b4? I thought one could only write
> gridded binary files. I have never been able to find any
> documentation regarding this (writing NETCDF output from GRADS). I
> know that version 2.0 is slated to have the NETCDF "write"
> functionality built into it in upcoming releases.
>
> Since v1.7 you can write NetCDF/HDF and GRIB-1 files from GrADS
> using the LATS interface. Basically you do a bunch of "set lats ..."
> commands, do a "set gxout lats" and when you display a variable it
> goes into your netcdf or grib-1 file. Lats4d is simply a GrADS
> script that serves as a frontend to the LATS interface, a
> convenience script of sorts. (BTW, lats4d can also serve as a front
> end to "set gxout fwrite".) Unfortunately, the LATS interface has
> been removed from v2, so the only thing lats4d can do there is to
> write binaries.
>
> I am not aware of any documentation for the LATS interface. I
> learned how use it by following Mike Fiorino's examples.  Lats4d has
> a built in man page that documents (almost) all of its options (I
> left  some NASA specific options undocumented as they are not
> relevant to the general user.)
>
>    Arlindo
>
>
> --
> Arlindo da Silva
> dasilva at alum.mit.edu

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