[gradsusr] Writing a netcdf in fortran that's readable by grads

[James T. Potemra]

Might be the same deal, i.e., need dimensions on time.  Try something
like "days since 1999-1-1 00:00:00" or whatever is appropriate.

Jim

On 1/15/15 12:12 PM, Thomas Robinson wrote:
> Thank you for the reply.
> I added:
> istatus = nf90_def_var(ncid,"lat", nf90_float, ila, ilat )
>           write (6,*) trim(nf90_strerror(istatus))
> i*status = nf90_put_att(ncid, ilat, 'units', 'degrees_north')*
> istatus = nf90_def_var(ncid,"lon", nf90_float, ilo, ilon )
>           write (6,*) trim(nf90_strerror(istatus))
> *istatus = nf90_put_att(ncid, ilon, 'units', 'degrees_east')*
>
> To give units to the latitude and longitude.  Now I have a new error:
>
> ga-> sdfopen foo.nc <http://foo.nc>
> Scanning self-describing file: foo.nc <http://foo.nc>
> SDF file has no discernable time coordinate -- using default values.
> gadsdf: SDF file does not have any non-coordinate variables.
>
> What does that mean?
>
> On Thu, Jan 15, 2015 at 11:53 AM, James T. Potemra <jimp at hawaii.edu 
> <mailto:jimp at hawaii.edu>> wrote:
>
>     Hi Tom,
>
>     I think you'll need to add attributes to your variables,
>     specifically the units.  For lat and lon these
>     should be "degrees_north" and "degrees_east".
>
>     Jim
>
>
>     On 1/15/15 11:38 AM, Thomas Robinson wrote:
>>     Aloha Grads Users,
>>
>>     I am bringing in some data and running calculations using fortran
>>     90.  I want to output the data as a netCDF file, and I would like
>>     it to be readable by grads.  I have no problem creating a file
>>     called foo.nc <http://foo.nc> and putting my lat, lon, and ref
>>     variables in the file.  The problem is if I go to grads and type
>>     'sdfopen foo.nc <http://foo.nc>', it says
>>     ga-> sdfopen foo.nc <http://foo.nc>
>>     Scanning self-describing file: foo.nc <http://foo.nc>
>>     gadsdf: SDF file has no discernable X coordinate.
>>       To open this file with GrADS, use a descriptor file with an
>>     XDEF entry.
>>       Documentation is at
>>     http://iges.org/grads/gadoc/SDFdescriptorfile.html
>>     What do I need to add to make the file self describing?
>>       I'm not sure what I need to add to get this to work.  Here is
>>     what I have so far:
>>
>>     istatus = nf90_create(path = "foo.nc <http://foo.nc>", cmode =
>>     nf90_noclobber, ncid = ncid)
>>               write (6,*) trim(nf90_strerror(istatus))
>>
>>     istatus =nf90_def_dim(ncid,'latitude',ny,ila)
>>               write (6,*) trim(nf90_strerror(istatus))
>>     istatus =nf90_def_dim(ncid,'longitude',nx,ilo)
>>               write (6,*) trim(nf90_strerror(istatus))
>>     istatus =nf90_def_dim(ncid,'time',1,itt)
>>               write (6,*) trim(nf90_strerror(istatus))
>>
>>     iids = (/ilo,ila,itt/)
>>
>>     istatus = nf90_def_var(ncid,"ref", nf90_float, iids, iref )
>>               write (6,*) trim(nf90_strerror(istatus))
>>     istatus = nf90_def_var(ncid,"lat", nf90_float, ila, ilat )
>>               write (6,*) trim(nf90_strerror(istatus))
>>     istatus = nf90_def_var(ncid,"lon", nf90_float, ilo, ilon )
>>               write (6,*) trim(nf90_strerror(istatus))
>>     istatus = nf90_enddef(ncid)
>>               write (6,*) trim(nf90_strerror(istatus))
>>
>>     istatus = nf90_put_var(ncid,iref,ref)
>>               write (6,*) trim(nf90_strerror(istatus))
>>     istatus = nf90_put_var(ncid,ilat,latrad)
>>               write (6,*) trim(nf90_strerror(istatus))
>>     istatus = nf90_put_var(ncid,ilon,lonref)
>>               write (6,*) trim(nf90_strerror(istatus))
>>
>>     istatus = nf90_close(ncid)
>>               write (6,*) trim(nf90_strerror(istatus))
>>
>>     -- 
>>     Tom Robinson
>>     Treasurer - Graduate Student Organization
>>     Secretary - Student Athletic Fee Committee
>>     Graduate Student - Department of Atmospheric Science
>>
>>
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>>     gradsusr at gradsusr.org  <mailto:gradsusr at gradsusr.org>
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>
>
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>
>
> -- 
> Tom Robinson
> Treasurer - Graduate Student Organization
> Secretary - Student Athletic Fee Committee
> Graduate Student - Department of Atmospheric Science
>
>
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