[gradsusr] netcdf control file error

Jennifer Adams jma at cola.iges.org
Wed Oct 6 08:17:56 EDT 2010


Roberto,
You need to give the full ncdump -c output (just the time and latitude  
coordinate metadata is not adequate), as well as the xdfopen-style  
descriptor, and the full text of your GrADS session that delivers the  
error message.
--Jennifer

On Oct 5, 2010, at 4:59 PM, Roberto Mera wrote:

>
>
> Regarding the questions below: I'm using opengrads 2.0.a7.oga.3. and  
> grads 1.9. on linux.
> First, using sdfopen I get this message:
>
> sdfopen Desktop/CPDN/nhqhga.pdg6dec.pnw.nc
> Scanning self-describing file:  Desktop/CPDN/nhqhga.pdg6dec.pnw.nc
> gadsdf: SDF file has no discernable X coordinate.
>
> Subsequently, I tried xdfopen with a control file. That did not work
> either. Then I created another ctl file that would read its variables
> and coordinate system. It opened fine but when I try to just draw the
> map I get this message no matter which variable I'm working with:
>
> gancgrid error: nc_get_vara_double failed; NetCDF: Start+count exceeds
> dimension bound
> Data Request Error:  Error for variable 'p1'
>    Error ocurred at column 1
>
> ncdump -h :
>
> netcdf nhqhga.pdg6dec.pnw {
> dimensions:
> 	X = 110 ;
> 	Y = 117 ;
> 	Z = 1 ;
> variables:
> 	int time(Z) ;
> 		time:long_name = "time" ;
> 		time:units = "month" ;
> 	float latitude(Y) ;
> 		latitude:long_name = "latitude" ;
> 		latitude:units = "degrees_north" ;
>
>
> .....plus other variables (37)
>
> Any thoughts?
>
>
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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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