[gradsusr] GrADS on ubuntu

Jennifer Adams jma at cola.iges.org
Thu Mar 11 11:37:20 EST 2010


Sorry, but my build of GrADS doesn't have any problems with udunits  
parsing of the units in that syntax. I don't know why it's not working  
in your environment. Perhaps John Huddleston (who provided the ubuntu  
build) can help.
--Jennifer

On Mar 11, 2010, at 10:56 AM, Song Feng wrote:

> Hi All:
>
> The output from ncdump -hc on the netcdf file are listed as the  
> following. The GrADS I installed cannot also display the 'ndtcdf'  
> files from the NCEP-NCAR reanalysis.
>
> netcdf pr_A1_sum {
> dimensions:
>         lat = 64 ;
>         bnds = 2 ;
>         lon = 128 ;
>         time = UNLIMITED ; // (150 currently)
> variables:
>         double lat(lat) ;
>                 lat:long_name = "Latitude" ;
>                 lat:standard_name = "latitude" ;
>                 lat:axis = "Y" ;
>                 lat:units = "degrees_north" ;
>                 lat:bounds = "lat_bnds" ;
>         double lat_bnds(lat, bnds) ;
>                 lat_bnds:long_name = "Latitude bounds" ;
>         double lon(lon) ;
>                 lon:long_name = "Longitude" ;
>                 lon:standard_name = "longitude" ;
>                 lon:axis = "X" ;
>                 lon:units = "degrees_east" ;
>                 lon:bounds = "lon_bnds" ;
>         double lon_bnds(lon, bnds) ;
>                 lon_bnds:long_name = "Longitude bounds" ;
>         float pr(time, lat, lon) ;
>                 pr:long_name = "Accumulated Total Precipitation" ;
>                 pr:original_units = "mm/day" ;
>                 pr:units = "kg m-2 s-1" ;
>                 pr:missing_value = 1.e+20f ;
>                 pr:_FillValue = 1.e+20f ;
>                 pr:cell_methods = "time: mean (interval: 30  
> minutes)" ;
>                 pr:standard_name = "precipitation_flux" ;
>         double time(time) ;
>                 time:long_name = "Time" ;
>                 time:units = "days since 1800-1-1 00:00:0.0" ;
>                 time:axis = "T" ;
>                 time:calendar = "gregorian" ;
>                 time:delta_t = "0000-01-00 00:00:00" ;
>                 time:avg_period = "0000-01-00 00:00:00" ;
>                 time:prev_avg_period = "0000-00-00 06:00:00" ;
>                 time:standard_name = "time" ;
>                 time:bounds = "time_bnds" ;
>         double time_bnds(time, bnds) ;
>
> // global attributes:
>                 :title = "BCCR model output prepared for IPCC Fourth  
> Assessment Report climate of the 20th Century experiment (20C3M)" ;
>                 :project_id = "IPCC Fourth Assessment" ;
>                 :table_id = "Table A1" ;
>                 :experiment_id = "climate of the 20th Century  
> experiment (20C3M)" ;
>
>
> Blessings,
>
> Song
>
> -----gradsusr-bounces at gradsusr.org wrote: -----
>
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> From: Jennifer Adams <jma at cola.iges.org>
> Sent by: gradsusr-bounces at gradsusr.org
> Date: 03/11/2010 08:40AM
> Subject: Re: [gradsusr] GrADS on ubuntu
>
> What is the output from ncdump -hc on pr_A1_sum.nc?
>
> On Mar 10, 2010, at 5:38 PM, Song Feng wrote:
>
>> Hi All:
>>
>> I installed the GrADS (version 2.0.a7.1) on ubuntu 9.1. The GrADS  
>> works well to display files on 'binary' and 'grib' format. However,  
>> the GrADS can not open the 'NetCDF' file. The following are the  
>> error message I got:
>>
>> ga> sdfopen pr_A1_sum.nc
>> Scanning self-describing file:  pr_A1_sum.nc
>> ut_get_converter(): Units not convertible
>> ut_get_converter(): Units not convertible
>> ut_get_converter(): Units not convertible
>> ut_get_converter(): Units not convertible
>> ut_get_converter(): Units not convertible
>> ut_get_converter(): Units not convertible
>> ut_get_converter(): Units not convertible
>> Success
>> ut_get_converter(): Couldn't get converter from seconds
>> ut_get_converter(): Units in different unit-systems
>> Success
>> ut_get_converter(): Couldn't get converter from seconds
>> ut_get_converter(): Units not convertible
>> Success
>> ut_get_converter(): Couldn't get converter from seconds
>> gadsdf: Error parsing time units in SDF file.
>>
>> I have used the GrADS on RedHat and Unix system and I am pretty  
>> sure I can display the file ' pr_A1_sum.nc' using 'sdfopen'. Any  
>> ideas/suggestions?
>>
>> Blessings,
>>
>> Song
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
>
> --
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Calverton, MD 20705
> jma at cola.iges.org
>
>
>
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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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