[gradsusr] Error Message: gancgrid error
Jennifer Adams
jma at cola.iges.org
Tue Jan 4 15:26:10 EST 2011
PLEASE ALWAYS PROVIDE THE VERSION OF GRADS YOU ARE USING!!!
Your netcdf file uses two dimensions for time: month and year are
separate, and the metadata is not COARDS compliant, so the sdfopen
code is not mapping the four dimensions of your data variable to X, Y,
Z, and T correctly. Use a descriptor file, either with the xdfopen or
open command. You are probably using an older version of GrADS 2.0;
sdfopen in the latest version would not recognize any of the data
variables in that file.
--Jennifer
On Jan 4, 2011, at 2:10 PM, sudev das M P wrote:
> Hi All,
>
> I have a netCDF file "ndn6089_flux.nc".
>
> When I tried to display the variable in this file it is showing
>
> following error. Please tell me how to fix this problem.
> =============================================
> ga-> sdfopen ndn6089_flux.nc
> Scanning self-describing file: ndn6089_flux.nc
> SDF file ndn6089_flux.nc is open as file 1
> LON set to 31 119
> LAT set to -29 23
> LEV set to 0 0
> Time values set: 1:1:31:10 1:1:31:10
> E set to 1 1
> ga-> q file
> File 1 : Indian Ocean monthly (fluxes) from Jones 1994
> Descriptor: ndn6089_flux.nc
> Binary: ndn6089_flux.nc
> Type = Gridded
> Xsize = 45 Ysize = 27 Zsize = 1 Tsize = 12 Esize = 1
> Number of Variables = 4
> taux 0 t,y,x Wind stress
> tauy 0 t,y,x Wind stress
> h 0 t,y,x Sensible Heat Flux
> e 0 t,y,x Latent Heat Flux
> ga-> d h
> gancgrid error: nc_get_vara_double failed; NetCDF: Index exceeds
> dimension bound
> Data Request Error: Error for variable 'h'
> Error ocurred at column 1
> DISPLAY error: Invalid expression
> Expression = h
> =================================================================
> I am giving the header file below:
> ================================================================
> netcdf ndn6089_flux {
> dimensions:
> lon = 45 ;
> lat = 27 ;
> month = 12 ;
> year = 30 ;
> variables:
> float lon(lon) ;
> lon:long_name = "longitude" ;
> lon:units = "degrees_east" ;
> lon:valid_range = 0.f, 360.f ;
> lon:min_max = 31.f, 119.f ;
> float lat(lat) ;
> lat:long_name = "latitude" ;
> lat:units = "degrees_north" ;
> lat:valid_range = -90.f, 90.f ;
> lat:min_max = -29.f, 23.f ;
> int month(month) ;
> month:long_name = "Month" ;
> month:units = "months" ;
> month:valid_range = 1, 12 ;
> month:time_step = 1 ;
> month:time_origin = "16-Dec-1959 12:00:00" ;
> month:base_time = 1, 16, 60 ;
> int year(year) ;
> year:long_name = "Year" ;
> year:units = "year" ;
> year:valid_range = 1960, 1989 ;
> year:time_step = 1 ;
> year:time_origin = "16-Dec-1959 12:00:00" ;
> year:base_time = 1, 16, 60 ;
> float Taux(year, month, lat, lon) ;
> Taux:short_name = "Taux" ;
> Taux:long_name = "Wind stress" ;
> Taux:units = "N m**-2" ;
> Taux:_FillValue = 99999.f ;
> Taux:missing_value = 99999.f ;
> Taux:valid_range = -5.f, 5.f ;
> Taux:min_max = -0.2607f, 0.4275f ;
> float Tauy(year, month, lat, lon) ;
> Tauy:short_name = "Tauy" ;
> Tauy:long_name = "Wind stress" ;
> Tauy:units = "N m**-2" ;
> Tauy:_FillValue = 99999.f ;
> Tauy:missing_value = 99999.f ;
> Tauy:valid_range = -5.f, 5.f ;
> Tauy:min_max = -0.2636f, 0.3903f ;
> float H(year, month, lat, lon) ;
> H:short_name = "H" ;
> H:long_name = "Sensible Heat Flux" ;
> H:units = "W m**-2" ;
> H:_FillValue = 99999.f ;
> H:missing_value = 99999.f ;
> H:valid_range = -100.f, 100.f ;
> H:min_max = -39.95f, 67.3f ;
> float E(year, month, lat, lon) ;
> E:short_name = "E" ;
> E:long_name = "Latent Heat Flux" ;
> E:units = "W m**-2" ;
> E:_FillValue = 99999.f ;
> E:missing_value = 99999.f ;
> E:valid_range = -500.f, 500.f ;
> E:min_max = -16.05f, 385.73f ;
>
> // global attributes:
> :title = "Indian Ocean monthly (fluxes) from Jones
> 1994" ;
> :source = "COAPS at FSU" ;
> :base_time = "1960 to 1989" ;
> :gridded = 1 ;
> :LandValue = 99999.f ;
> :_FillValue = 99999.f ;
> :missing_value = 99999.f ;
> :first_varid = 4 ;
> data:
>
> lon = 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59,
> 61, 63,
> 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95,
> 97, 99,
> 101, 103, 105, 107, 109, 111, 113, 115, 117, 119 ;
>
> lat = -29, -27, -25, -23, -21, -19, -17, -15, -13, -11, -9, -7, -5,
> -3, -1,
> 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23 ;
>
> month = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ;
>
> year = 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969,
> 1970,
> 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980,
> 1981, 1982,
> 1983, 1984, 1985, 1986, 1987, 1988, 1989 ;
>
> =================================================================
>
> Thanking You,
> sudev
> _______________________________________________
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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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