Gribmap for GrADS 2.0.a2 with template option issue? (grib2 files)

Jennifer Adams jma at COLA.IGES.ORG
Fri Jun 6 17:21:41 EDT 2008 

Wesley would have to provide the last word, but I do not believe he
has added support for EDEF statements in g2ctl yet.
I generally compose them manually using output from grib2scan, and
gribmap with the -v option.
Jennifer

On Jun 6, 2008, at 4:48 PM, Uwe Gramann wrote:

> Do I understand you correctly then:
> I cannot get g2ctl.pl to create a control file with EDEF
> statements, since none of the following can find my grib files:
>
> g2ctl.pl -verf gep%e.t00z.pgrb2af%f3.grib > uwe.ctl
> g2ctl.pl -verf gep%e.t00z.pgrb2af000.grib > uwe.ctl
>
> So I should write a little perl script that will do the job for me?
>
> Cheers,
> Uwe
>
>
>
> ----- Original Message -----
> From: Jennifer Adams
> To: GRADSUSR at LIST.CINECA.IT
> Sent: Friday, June 06, 2008 1:28 PM
> Subject: Re: Gribmap for GrADS 2.0.a2 with template option issue?
> (grib2 files)
>
>
> On Jun 6, 2008, at 3:19 PM, Uwe Gramann wrote:
>
>> Hmm that's interesting, I was not aware that I HAD to use the
>> ensemble descriptor.
> You need to include the ensemble grib codes when the Product
> Definition Template Number is 1, 2, 11, or 12. There are examples
> (such as ecmwf tigge data) in which the PDT number is the only way
> to distinguish two fields in the same file. The GrADS interface
> doesn't have a place to put the PDT number, it is assumed to be 0
> or 8 unless specified otherwise in the extended EDEF entry.
>
> The grib2scan utility will tell you what the PDT number is, and so
> will the gribmap -v output, and so will wgrib2 -Sec4.
>
>
>> This leads me then to a more basic question, though:
>> g2ctl.pl then would be able to generate the control file from the
>> original files, right?  The orginals are:
>>
>> ...
>> -rw-r--r-- 1 ugramann ugramann  64919 Jun  5 03:56
>> gep20.t00z.pgrb2af240.grib
>> -rw-r--r-- 1 ugramann ugramann  64866 Jun  5 03:56
>> gep20.t00z.pgrb2af252.grib
>> -rw-r--r-- 1 ugramann ugramann  65039 Jun  5 03:56
>> gep20.t00z.pgrb2af264.grib
>> -rw-r--r-- 1 ugramann ugramann  65079 Jun  5 03:56
>> gep20.t00z.pgrb2af276.grib
>> -rw-r--r-- 1 ugramann ugramann  64692 Jun  5 03:56
>> gep20.t00z.pgrb2af288.grib
>> -rw-r--r-- 1 ugramann ugramann  65104 Jun  5 03:56
>> gep20.t00z.pgrb2af300.grib
>> -rw-r--r-- 1 ugramann ugramann  64787 Jun  5 03:56
>> gep20.t00z.pgrb2af312.grib
>> -rw-r--r-- 1 ugramann ugramann  65517 Jun  5 03:56
>> gep20.t00z.pgrb2af324.grib
>> -rw-r--r-- 1 ugramann ugramann  65090 Jun  5 03:56
>> gep20.t00z.pgrb2af336.grib
>> -rw-r--r-- 1 ugramann ugramann  65445 Jun  5 03:56
>> gep20.t00z.pgrb2af348.grib
>> -rw-r--r-- 1 ugramann ugramann  64933 Jun  5 03:56
>> gep20.t00z.pgrb2af360.grib
>> -rw-r--r-- 1 ugramann ugramann  65708 Jun  5 03:56
>> gep20.t00z.pgrb2af372.grib
>> -rw-r--r-- 1 ugramann ugramann  65313 Jun  5 03:56
>> gep20.t00z.pgrb2af384.grib
>> but the following line does not find any files:
>>
>> g2ctl.pl -verf gep%e.t00z.pgrb2af%f3.grib > uwe.ctl
>> (if I replace the %e template with '20' it finds the files, but
>> not with '%e2')
>>
>> I am still doing something wrong with the ensemble template??
>
> The %e template substitution marker doesn't require a number the
> way the time template markers do. The ensemble name (as given in
> your EDEF statement) is substituted completely where the %e
> appears in your DSET entry.
>
> Jennifer
>
>
>>
>> Thanks so much and Cheers,
>> Uwe
>>
>>
>> ----- Original Message -----
>> From: Jennifer Adams
>> To: GRADSUSR at LIST.CINECA.IT
>> Sent: Friday, June 06, 2008 11:17 AM
>> Subject: Re: Gribmap for GrADS 2.0.a2 with template option issue?
>> (grib2 files)
>>
>> Uwe,
>> There's no need to have a separate descriptor file for each member
>> -- that's the whole purpose of the E dimension, to aggregate
>> members into a single data set! An example of a GFS ensemble
>> descriptor file with full EDEF is here:
>>    http://iges.org/grads/gadoc/gfsens.ctl
>>
>> Specifically, what your descriptor needs, is this:
>> edef 1
>> 20  33  00z05jun2008  3,20
>> endedef
>>
>> The name "20" is a guess from your filename. If you want to
>> template over E, change DSET to
>> dset ^gens_%e_2008060500z_P%f3.grib
>>
>> Then get the ensemble grib codes from the grib2scan output (grep
>> on "Ens") or from the gribmap -v output (look for "ens=")
>>
>> The EDEF documentation is at http://iges.org/grads/gadoc/
>> descriptorfile.html#EDEF
>>
>> Jennifer
>>
>>
>> On Jun 6, 2008, at 12:22 PM, Uwe Gramann wrote:
>>
>>> Hi Jennifer,
>>> thanks for looking into this!
>>> I have attached the output of the gribmap/grib2scan and the ctl
>>> file (which does not contain a edef declaration).  I am not sure
>>> if I need an edef declaration, though, since I am treating each
>>> member as a separate model and create control files for each
>>> independently?
>>>
>>> In case I will not get anywhere ... is there a server that has
>>> grib1 data of the gfs ensembles still?
>>>
>>> Cheer and thanks again,
>>> Uwe
>>> ----- Original Message -----
>>> From: Jennifer Adams
>>> To: GRADSUSR at LIST.CINECA.IT
>>> Sent: Thursday, June 05, 2008 12:00 PM
>>> Subject: Re: Gribmap for GrADS 2.0.a2 with template option issue?
>>> (grib2 files)
>>>
>>>
>>> On Jun 4, 2008, at 10:13 PM, Uwe Gramann wrote:
>>>
>>>> Hello everybody,
>>>>
>>>> I have not much luck trying to open GFS ensemble grib2 files
>>>> with the template option.  After downloading all members and
>>>> trying to apply the time-template option to a member like:
>>>>
>>>> g2ctl.pl -verf gens_20_2008060400z_P%f3.grib > uwe.ctl
>>>> gribmap -i uwe.ctl
>>>>
>>>> gribmap reports no errors, the control file looks okay, but all
>>>> variables are undef in Grads 2.0.a2!
>>> What does your descriptor file look like? I don't think g2ctl
>>> handles the ensemble declarations for EDEF (yet),  you may have
>>> to add those manually.
>>> What is the output from gribmap -v ?
>>> What is the output from grib2scan -v ?
>>> Jennifer
>>>
>>>
>>>>
>>>> I have no issues opening the individual files in Grads or
>>>> combining each forecast-member's files into one large file and
>>>> then opening those.
>>>>
>>>> Jennifer just mentioned that a gribmap time-template bug has
>>>> been fixed, but I still have one ....
>>>>
>>>> Does anybody have any ideas ... suggestions ...
>>>>
>>>> Cheers and thanks to all
>>>>
>>>> Uwe
>>>>
>>>> ---------------------------------------
>>>> Uwe Gramann
>>>> Mountain Weather Services
>>>> P.O.Box 4191, 4262 Railway Ave.
>>>> Smithers, BC, V0J 2N0
>>>> Cell: +250.877.3785
>>>> e-mail: weather at uniserve.com
>>>> web: www.mountainweatherservices.com
>>>> ---------------------------------------
>>>>
>>>> ----- Original Message -----
>>>> From: Jennifer Adams
>>>> To: GRADSUSR at LIST.CINECA.IT
>>>> Sent: Friday, May 02, 2008 9:40 AM
>>>> Subject: NEW RELEASE of GrADS 2.0.a2
>>>>
>>>> Dear All,
>>>> I have posted a new version of GrADS:  2.0.a2. This version has
>>>> several new features and important bug fixes. The GrADS
>>>> downloads web page (http://iges.org/grads/downloads.html) has
>>>> also been updated with links to the source code and two binary
>>>> releases (more binaries to follow as soon as possible).
>>>>
>>>>     Features:
>>>>     * ready for use with GDS-2.0 to access 5-dimensional data
>>>> sets via OPeNDAP
>>>>     * support for thinned grib2 grids
>>>>     * gribmap has -0 option for grib2
>>>>     * allows non-float data types for hdf coordinate axes
>>>>
>>>>     Bug Fixes:
>>>>     * memory leak when replacing an existing defined variable
>>>>     * multiple fixes for netcdf/hdf handling (templating, zrev, %
>>>> nodim%, et al.)
>>>>     * contour interval and label handling for double precision
>>>> numbers
>>>>     * changed 'query dims' output for ensembles
>>>>     * fixed gribmap's handling of data sets templated over T but
>>>> not E
>>>>     * fixed 'set annot' command and other minor bugs
>>>>
>>>> This release is a companion for GDS 2.0, which can now serve 5-D
>>>> data sets. COLA is running a 2nd GDS for testing on port 9191
>>>> that is serving everything on the 9090 server plus GFS ensemble
>>>> forecasts. Check 'em out at
>>>>      http://monsoondata.org:9191/dods/gfsens/
>>>> A public release of GDS 2.0 is forthcoming -- we are still
>>>> testing. If you'd like to help, please try using the 9191 server.
>>>>
>>>> Please post comments and questions and bug reports here (low-
>>>> tech bug tracking is still in use at COLA). As always, I must be
>>>> able to reproduce a problem on my own systems in order to fix
>>>> it, so keep that in mind when reporting bugs.
>>>>
>>>> Jennifer
>>>>
>>>> --
>>>> Jennifer M. Adams
>>>> IGES/COLA
>>>> 4041 Powder Mill Road, Suite 302
>>>> Calverton, MD 20705
>>>> jma at cola.iges.org
>>>>
>>>>
>>>>
>>>>
>>>
>>> --
>>> Jennifer M. Adams
>>> IGES/COLA
>>> 4041 Powder Mill Road, Suite 302
>>> Calverton, MD 20705
>>> jma at cola.iges.org
>>>
>>>
>>>
>>> <gens_20_2008060500z_P000.ctl><grib2scan.with.gens_20_2008060500z_P0
>>> 12.grib><gribmap.of.gens_20_2008060500z_P000.ctl>
>>
>> --
>> Jennifer M. Adams
>> IGES/COLA
>> 4041 Powder Mill Road, Suite 302
>> Calverton, MD 20705
>> jma at cola.iges.org
>>
>>
>>
>>
>
> --
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Calverton, MD 20705
> jma at cola.iges.org
>
>
>
>

--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20080606/fc46539e/attachment.html

More information about the gradsusr mailing list