[gradsusr] SDF file does not have any non-coordinate variables

[Jennifer Adams]

I think the problem is that your Z coordinate is named "level" in most places, except the variable name, which is "lev". GrADS is detecting the variable 'lev' as the Z coordinate for the internal grid, but all the variables have "level" in their dimension name lists, so they do not make the list of non-coordinate variables -- GrADS thinks they are on a different grid. 
--Jennifer



On May 23, 2013, at 9:20 PM, Laura Zamboni wrote:

> Hi,
> 
> can you help me understanding why grads returns the following error:
> "gadsdf: SDF file does not have any non-coordinate variables"
> 
> I've created an .nc file using Matlab that grads reads correctly but returns the error above when I add the "lev" dimension. (The data actually do not depend on either time or lev, but I am adding them to be able to use such file together with a second file which does have those dimensions).

> 
> I am pasting here the header of the 2 files. Data are present on both files.
> Thank you,
> Laura
> 
> $ ncdump -h eo_quadFit_noLev.nc 
> netcdf eo_quadFit_noLev {
> dimensions:
> 	longitude = 180 ;
> 	latitude = 90 ;
> 	time = 1 ;
> variables:
> 	double longitude(longitude) ;
> 		longitude:long_name = "Longitude" ;
> 		longitude:units = "degrees_east" ;
> 	double latitude(latitude) ;
> 		latitude:lat_name = "Latitude" ;
> 		latitude:units = "degrees_north" ;
> 	double time(time) ;
> 		time:long_name = "Time" ;
> 		time:calendar_type = "JULIAN" ;
> 		time:units = "Days since 1950-01-01 00:00:00" ;
> 	double quad(time, latitude, longitude) ;
> 		quad:long_name = "quadratic coeff." ;
> 		quad:units = "mm/day" ;
> 		quad:missing_value = -9999. ;
> 	double lin(time, latitude, longitude) ;
> 		lin:long_name = "linear coeff" ;
> 		lin:units = "mm/day" ;
> 		lin:missing_value = -9999. ;
> }
> 
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> $ ncdump -h eo_quadFit_WITHLev.nc 
> netcdf eo_quadFit_WITHLev {
> dimensions:
> 	longitude = 180 ;
> 	latitude = 90 ;
> 	time = 1 ;
> 	level = 1 ;
> variables:
> 	double longitude(longitude) ;
> 		longitude:long_name = "Longitude" ;
> 		longitude:units = "degrees_east" ;
> 	double latitude(latitude) ;
> 		latitude:lat_name = "Latitude" ;
> 		latitude:units = "degrees_north" ;
> 	double time(time) ;
> 		time:long_name = "Time" ;
> 		time:calendar_type = "JULIAN" ;
> 		time:units = "Days since 1950-01-01 00:00:00" ;
> 	double lev(level) ;
> 		lev:long_name = "Level" ;
> 		lev:units = "hPa" ;
> 	double quad(level, time, latitude, longitude) ;
> 		quad:long_name = "quadratic coeff." ;
> 		quad:units = "mm/day" ;
> 		quad:missing_value = -9999. ;
> 	double lin(level, time, latitude, longitude) ;
> 		lin:long_name = "linear coeff" ;
> 		lin:units = "mm/day" ;
> 		lin:missing_value = -9999. ;
> }
> 
> 
> -- 
> 
> -------------------------
> Laura Zamboni, PhD
> Computational Postdoctoral Fellow - Climate Scientist
> Board member of the Postdoctoral Society of Argonne - Chair of the PSA mentoring committee
> Argonne National Laboratory, MCS Division
> 9700 S.Cass Ave
> TCS Bldg #240, room 4152
> Argonne, IL 60439
> ph.+1 630-252-1131
> fax. +1 630-252-5986
> web: http://www.mcs.anl.gov/~lzamboni/
> _______________________________________________
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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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