[gradsusr] GrADS is displaying only 1 variable
James T. Potemra
jimp at hawaii.edu
Thu Aug 2 14:48:19 EDT 2018
This is not exactly correct. If you have variables in different files
you can specify them with a numeric suffix. for example open one file
with a variable called "temp" and a second file with another variable
with the same name. You can access temp from the first file as temp.1
and from the second file as temp.2.
In this case I think the problem is your variables have different
dimension sizes (u has 1152 lats and v has 1153). I think this is why
the first variable is showing.
Jim
On 8/2/18 6:44 AM, Eduardo Agosta Scarel wrote:
> Variables within one file are hiddenly ordered from 1 to the last
> variable, so to display them you must add the index.
> In your case you should do:
> 'd u' (or 'd u.1', the first variable does not need to be indexed for
> recognition)
> 'd v.2'
> 'd t.3'
>
> Have you tried like this?
>
>
> Edu.
>
> El jue., 2 de ago. de 2018 a la(s) 13:16, Joseph Basconcillo
> (jbasconcillo at pagasa.dost.gov.ph
> <mailto:jbasconcillo at pagasa.dost.gov.ph>) escribió:
>
> Hi,
>
> Below is my header file for the file,
> "gdaps_anal_768_2018050100.nc <http://gdaps_anal_768_2018050100.nc>".
>
> I opened them successfully in other platforms including all
> variables (e.g. u, v, theta, temp) but in GrADS only u is being
> shown. The other variables are being left out.
>
> netcdf file:/G:/gdaps_anal_768_2018050100.nc
> <http://gdaps_anal_768_2018050100.nc> {
> dimensions:
> longitude = 1536;
> latitude = 1152;
> hybrid_ht = 1;
> t = UNLIMITED; // (1 currently)
> longitude_1 = 1536;
> latitude_1 = 1153;
> hybrid_ht_1 = 1;
> surface = 1;
> variables:
> float u(t=1, hybrid_ht=1, latitude=1152, longitude=1536);
> :source = "Unified Model Output (Vn10.2):";
> :name = "u";
> :title = "Westerly component of wind u";
> :date = "01/05/18";
> :time = "00:00";
> :long_name = "Westerly component of wind u";
> :units = "m s-1";
> :missing_value = 2.0E20f; // float
> :_FillValue = 2.0E20f; // float
> :valid_min = -24.836214f; // float
> :valid_max = 21.292374f; // float
>
> float v(t=1, hybrid_ht=1, latitude_1=1153, longitude_1=1536);
> :source = "Unified Model Output (Vn10.2):";
> :name = "v";
> :title = "Southerly component of wind v";
> :date = "01/05/18";
> :time = "00:00";
> :long_name = "Southerly component of wind v";
> :units = "m s-1";
> :missing_value = 2.0E20f; // float
> :_FillValue = 2.0E20f; // float
> :valid_min = -19.5578f; // float
> :valid_max = 26.530746f; // float
>
> float theta(t=1, hybrid_ht_1=1, latitude=1152, longitude_1=1536);
> :source = "Unified Model Output (Vn10.2):";
> :name = "theta";
> :title = "Potential temperature";
> :date = "01/05/18";
> :time = "00:00";
> :long_name = "Potential temperature";
> :units = "K";
> :missing_value = 2.0E20f; // float
> :_FillValue = 2.0E20f; // float
> :valid_min = 227.68872f; // float
> :valid_max = 328.4967f; // float
>
> float temp(t=1, surface=1, latitude=1152, longitude_1=1536);
> :source = "Unified Model Output (Vn10.2):";
> :name = "temp";
> :title = "Temperature T";
> :date = "01/05/18";
> :time = "00:00";
> :long_name = "Temperature T";
> :units = "K";
> :missing_value = 2.0E20f; // float
> :_FillValue = 2.0E20f; // float
> :valid_min = 191.576f; // float
> :valid_max = 329.6931f; // float
>
> float longitude(longitude=1536);
> :units = "degrees_east";
> :point_spacing = "even";
> :modulo = " ";
> :_CoordinateAxisType = "Lon";
>
> float latitude(latitude=1152);
> :units = "degrees_north";
> :point_spacing = "even";
> :_CoordinateAxisType = "Lat";
>
> float hybrid_ht(hybrid_ht=1);
> :units = "level";
> :positive = "up";
> :_CoordinateAxisType = "GeoZ";
> :_CoordinateZisPositive = "up";
>
> float t(t=1);
> :units = "days since 2018-05-01 00:00:00";
> :time_origin = "01-MAY-2018:00:00:00";
> :_CoordinateAxisType = "Time";
>
> float longitude_1(longitude_1=1536);
> :units = "degrees_east";
> :point_spacing = "even";
> :modulo = " ";
> :_CoordinateAxisType = "Lon";
>
> float latitude_1(latitude_1=1153);
> :units = "degrees_north";
> :point_spacing = "even";
> :_CoordinateAxisType = "Lat";
>
> float hybrid_ht_1(hybrid_ht_1=1);
> :units = "level";
> :positive = "up";
> :_CoordinateAxisType = "GeoZ";
> :_CoordinateZisPositive = "up";
>
> float surface(surface=1);
> :units = "level";
> :positive = "up";
> :_CoordinateAxisType = "GeoZ";
> :_CoordinateZisPositive = "up";
>
> // global attributes:
> :history = "Wed Jul 4 06:45:35 UTC 2018 - CONVSH V1.91
> 16-February-2006";
> :_CoordSysBuilder = "ucar.nc2.dataset.conv.DefaultConvention";
> }
>
>
> The descriptor file I used is the following:
>
> dset ^gdaps_anal_768_2018050100.nc
> <http://gdaps_anal_768_2018050100.nc>
> dtype netcdf
> undef 2.0E20f_missing_value
> xdef 1536 linear 0 360
> ydef 1152 linear -90 90
> tdef 1 linear 00Z01MAY2018 1
> edef 1 linear 1 1
> vars 3
> u 1 t,z,y,x Westerly component of wind u
> v 1 t,z,y,x Easterly component of wind v
> t 1 t,z,y,x Temperature T
> endvars
>
> The error says gadxdf error: Missing or invalid dimension size. I
> am guessing the error is the xdef and ydef. Can you help me on this?
>
> Thanks.
>
> Yours,
> Joseph Basconcillo
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>
>
>
> --
> Eduardo Agosta Scarel
>
> "The Carmelite NGO is a way to promote justice, peace and care for
> creation"
> "La ONG Carmelita es una manera de promover la justicia, la paz y el
> cuidado de la creación"
> _http://carmelitengo.org/_
>
>
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