[gradsusr] problem reading netcdf file

[Jennifer Adams]

This is a known bug. You have to use the open command and a full  
descriptor file. Please see a thread in the archives that ended with  
this message: http://gradsusr.org/pipermail/gradsusr/2011-February/012513.html
--Jennifer




On Aug 31, 2011, at 1:33 PM, Sara A. Rauscher wrote:

> Hi-
> I am having trouble getting grads to read output from CAM. I am using
> grads version 2 -
> Config: v2.0.a9 little-endian readline printim grib2 netcdf hdf4-sds
> hdf5 opendap-grids,stn geotiff shapefile
>
> When I open the file with sdfopen, it will not read the variable name.
> When I do "q file", grads doesn't read the variable name:
> ga-> q file
> File 1 :
>   Descriptor: test.nc
>   Binary: test.nc
>   Type = Gridded
>   Xsize = 144  Ysize = 96  Zsize = 1  Tsize = 1  Esize = 1
>   Number of Variables = 1
>        0  t,y,x  Sea level pressure
>
> I've tried creating DDFs to use xdfopen but this doesn't work either.
> This is a really simple file (see ncdump below) and I can read it with
> ncview, NCL, etc.
> thanks
> sara
>
>
> The ncdump of the netcdf file ("test.nc") looks like this
> netcdf test {
> dimensions:
>     lat = 96 ;
>     lon = 144 ;
>     time = UNLIMITED ; // (1 currently)
> variables:
>     double lat(lat) ;
>         lat:long_name = "latitude" ;
>         lat:units = "degrees_north" ;
>     double lon(lon) ;
>         lon:long_name = "longitude" ;
>         lon:units = "degrees_east" ;
>     double time(time) ;
>         time:long_name = "time" ;
>         time:units = "days since 0001-07-01 00:00:00" ;
>         time:calendar = "leap" ;
>         time:bounds = "time_bnds" ;
>     float PSL(time, lat, lon) ;
>         PSL:units = "Pa" ;
>         PSL:long_name = "Sea level pressure" ;
>         PSL:cell_methods = "time: mean" ;
>
> // global attributes:
>         :Conventions = "CF-1.0" ;
>         :source = "CAM" ;
>         :case = "test1" ;
>         :title =  ;
>         :logname = "rauscher" ;
>         :host = "nid04099" ;
>         :Version = "$Name$" ;
>         :revision_Id = "$Id$" ;
>         :initial_file = "/global/homes/r/rauscher/cam_mpas/fv/ 
> test.nc" ;
>         :topography_file = "bnd_topo" ;
>         :history = "Wed Aug 31 10:28:36 2011: ncatted -a
> calendar,time,o,c,leap test.nc\n",
>             "Wed Aug 31 10:28:17 2011: ncra -v PSL
> test1.cam2.h0.0002-01.nc test1.cam2.h0.0002-02.nc
> test1.cam2.h0.0002-03.nc test1.cam2.h0.0002-04.nc
> test1.cam2.h0.0002-05.nc test1.cam2.h0.0002-06.nc
> test1.cam2.h0.0002-07.nc test1.cam2.h0.0002-08.nc
> test1.cam2.h0.0002-09.nc test1.cam2.h0.0002-10.nc
> test1.cam2.h0.0002-11.nc test1.cam2.h0.0002-12.nc
> test1.cam2.h0.0003-01.nc test1.cam2.h0.0003-02.nc
> test1.cam2.h0.0003-03.nc test1.cam2.h0.0003-04.nc
> test1.cam2.h0.0003-05.nc test1.cam2.h0.0003-06.nc
> test1.cam2.h0.0003-07.nc test1.cam2.h0.0003-08.nc
> test1.cam2.h0.0003-09.nc test1.cam2.h0.0003-10.nc
> test1.cam2.h0.0003-11.nc test1.cam2.h0.0003-12.nc
> test1.cam2.h0.0004-01.nc test1.cam2.h0.0004-02.nc
> test1.cam2.h0.0004-03.nc test1.cam2.h0.0004-04.nc
> test1.cam2.h0.0004-05.nc test1.cam2.h0.0004-06.nc
> test1.cam2.h0.0004-07.nc test1.cam2.h0.0004-08.nc
> test1.cam2.h0.0004-09.nc test1.cam2.h0.0004-10.nc
> test1.cam2.h0.0004-11.nc test1.cam2.h0.0004-12.nc
> test1.cam2.h0.0005-01.nc test1.cam2.h0.0005-02.nc
> test1.cam2.h0.0005-03.nc test1.cam2.h0.0005-04.nc
> test1.cam2.h0.0005-05.nc test1.cam2.h0.0005-06.nc
> test1.cam2.h0.0005-07.nc test1.cam2.h0.0005-08.nc
> test1.cam2.h0.0005-09.nc test1.cam2.h0.0005-10.nc
> test1.cam2.h0.0005-11.nc test1.cam2.h0.0005-12.nc test.nc" ;
>         :nco_openmp_thread_number = 1 ;
> }
>
>
> -- 
> Sara A. Rauscher
> (505) 606-0512
> T-3 Fluid Dynamics
> MS B216
> Los Alamos National Lab
> Los Alamos, NM 87545 USA
>
>
> _______________________________________________
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> gradsusr at gradsusr.org
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--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



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