Re: [idvusers] IDV unable to recognize grids from nomads.ncep.noaa.gov

• To: John Caron <caron@xxxxxxxxxxxxxxxx>
• Subject: Re: [idvusers] IDV unable to recognize grids from nomads.ncep.noaa.gov
• From: Rich Signell <rsignell@xxxxxxxx>
• Date: Wed, 6 Apr 2011 20:40:44 -0400

On Wed, Apr 6, 2011 at 8:25 PM, John Caron <caron@xxxxxxxxxxxxxxxx> wrote:

>
> 2) that dataset has an ensemble dimension that IDV/CDM doesnt recognize.
>  the main problem is that the CDM doesnt currently parse the "GRaDS"
> conventions, which doesnt seem to be published. theres probably an NcML
> workaround in case that helps.

I tried removing the "ens" dimension in NcML

BEFORE

 <variable name="no4lftxsfc" shape="ens time lat lon" type="float">
    <attribute name="_CoordinateAxes" value="ens time lat lon " />
    <attribute name="_FillValue" type="float" value="9.999E20" />
    <attribute name="missing_value" type="float" value="9.999E20" />
    <attribute name="long_name" value="** surface best (4 layer)
lifted index [k] " />
  </variable>

AFTER


 <variable name="no4lftxsfc" shape="time lat lon" type="float">
    <attribute name="_CoordinateAxes" value="time lat lon " />
    <attribute name="_FillValue" type="float" value="9.999E20" />
    <attribute name="missing_value" type="float" value="9.999E20" />
    <attribute name="long_name" value="** surface best (4 layer)
lifted index [k] " />
  </variable>

and although that allows them to appear as "Grid" variables in the
ToolsUI "feature" tab, when you try to plot I get:

GridRender.makeHSlice Error reading netcdf file= java.io.IOException: Number of
ranges in section (3) must be = 4

-Rich

> John
>
>
> On 4/6/2011 2:50 PM, Kevin R. Tyle wrote:
>>
>> Hi all,
>>
>> Any idea why IDV does not recognize GFS Ensemble files from
>> nomads.ncep.noaa.gov:9090/dods/gens as grid files?
>>
>> For any of the catalog items listed when I browse this directory, I get an
>> error of the form (e.g. perturbation run # 20 from 12Z run today):
>>
>> There was an error loading the data:
>> Error creating data source:dods.grid with:
>> http://nomads.ncep.noaa.gov:9090/dods/gens/gens20110406/gep20_12z
>> Grid data source failed making data set:
>> dods://nomads.ncep.noaa.gov:9090/dods/gens/gens20110406/gep20_12z
>> /gens/gens20110406/gep20_12z is not an available dataset
>>
>> The specific exception is:
>> opendap.dap.DAP2Exception: /gens/gens20110406/gep_all_12z is not an
>> available dataset
>>
>> Other models (e.g. GFS) load fine from this NOMADS server.
>>
>> Thanks,
>>
>> Kevin
>>
>> ______________________________________________________________________
>> Kevin Tyle, Systems Administrator               **********************
>> Dept. of Atmospheric & Environmental Sciences   ktyle@xxxxxxxxxxxxxxxx
>> University at Albany, ES-235                    518-442-4578 (voice)
>> 1400 Washington Avenue                          518-442-5825 (fax)
>> Albany, NY 12222                                **********************
>> ______________________________________________________________________
>>
>>
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-- 
Dr. Richard P. Signell   (508) 457-2229
USGS, 384 Woods Hole Rd.
Woods Hole, MA 02543-1598

• Follow-Ups:
  • Re: [idvusers] IDV unable to recognize grids from nomads.ncep.noaa.gov
    • From: John Caron

• References:
  • [idvusers] IDV unable to recognize grids from nomads.ncep.noaa.gov
    • From: Kevin R. Tyle
  • Re: [idvusers] IDV unable to recognize grids from nomads.ncep.noaa.gov
    • From: John Caron