[gradsusr] gancgrid error: nc_get_vara_double failed; NetCDF: Index exceeds dimension bound

[Jeff Duda]

In the VARS section of a control file for a netCDF dataset, you need to
correctly specify the order of the dimensions of each array. Your control
file has t,y,x as the dimension order for tp, but in your ncdump output tp
is 4-dimensional with an ensemble dimension. So you should change that part
of the entry in the control file to t,e,y,x, and see if that works. I'm not
sure if Grads handles the ensemble dimension like that correctly, but it
should.

Jeff Duda

On Thu, Dec 1, 2016 at 6:43 AM, Endalkachew Bekele - NOAA Affiliate <
endalkachew.bekele at noaa.gov> wrote:

> Hi All,
>
> I have downloaded reforecast data in netcdf format from the the ECMWF s2s
> project page.
>
> Since sdfopen didn't work I created a control file as follows::
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> *dset s2s_ecmwf_24_dec_12_1996_2015.nc
> <http://s2s_ecmwf_24_dec_12_1996_2015.nc>titleundef -9.99e+33dtype
> netcdfydef 121 linear -90 1.5xdef 240 linear 0 1.5zdef 1 linear 1 1edef 10
> names e1 e2 e3 e4 e5 e6 e7 e8 e9 e10tdef 20 linear 00Z13DEC1996 1yrvars
> 1tp  0 99  t,y,x  Total Precipitationendvars*
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> Based on the following partial ncdump output:
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> *netcdf s2s_ecmwf_24_dec_12_1996_2015 {dimensions:        longitude = 240
> ;        latitude = 121 ;        number = 10 ;        time = UNLIMITED ; //
> (20 currently)variables:        float longitude(longitude) ;
> longitude:units = "degrees_east" ;                longitude:long_name =
> "longitude" ;        float latitude(latitude) ;
> latitude:units = "degrees_north" ;                latitude:long_name =
> "latitude" ;        int number(number) ;                number:long_name =
> "ensemble_member" ;        int time(time) ;                time:units =
> "hours since 1900-01-01 00:00:0.0" ;                time:long_name = "time"
> ;                time:calendar = "gregorian" ;        short tp(time,
> number, latitude, longitude) ;                tp:scale_factor =
> 0.00549830333572399 ;                tp:add_offset = 180.157407098332
> ;                tp:_FillValue = -32767s ;                tp:missing_value
> = -32767s ;                tp:units = "kg m**-2" ;
> tp:long_name = "Total Precipitation" ;*
>
>
> I get the following error message while trying to display the variable
> 'tp' :
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> g
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> *ancgrid error: nc_get_vara_double failed; NetCDF: Index exceeds dimension
> boundData Request Error:  Error for variable 'tp'  Error ocurred at column
> 1DISPLAY error:  Invalid expression  Expression = tp*
>
> I am using GrADS 2.01. I couldn't figure out the problem from the previous
> similar posts.
>
> Any advice from the forum?
>
> Thanks,
>
> Endalk
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>
>
> _______________________________________________
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>
>


-- 
Jeff Duda
Post-doctoral research fellow
University of Oklahoma School of Meteorology
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