[gradsusr] gradsusr Digest, Vol 13, Issue 49

Zilore Mumba zmumba at gmail.com
Fri Mar 25 02:49:09 EDT 2011


Excuse me this message was meant for ncl_talk

On 3/25/11, Zilore Mumba <zmumba at gmail.com> wrote:
> Definition of lat/lon in a file.
> With Excuses on people's time with a very basic problem I have, I
> would like to request once more if someone can spare some of their
> time to look at my definition of lat/lon in the ncl scripts attached.
> 1. I have binary data (not GRIB, but written into binary by fortran)
> converted through Grads (Lats4d) into NetCdf. Both the original binary
> file and the NetCdf versions work in Grads but not in ncl. I assumed
> it did not work because the file was binary (not GRIB).
> 2. I took model output data in GRIB and made a ctl with grib2ctl and
> converted to NetCdf in Grads. It does not work in ncl.
> 3. I downloaded 850hPa temperature data (in NetCdf format) from the
> NCEP reanalysis page. It does not work in ncl, but works in Grads.
>
> In all the three cases above the error is the same, as below
> **************
>  Copyright (C) 1995-2010 - All Rights Reserved
>  University Corporation for Atmospheric Research
>  NCAR Command Language Version 5.2.1
>  The use of this software is governed by a License Agreement.
>  See http://www.ncl.ucar.edu/ for more details.
> fatal:Either file (f1) isn't defined or variable (Air) is not a
> variable in the file
>
> fatal:Execute: Error occurred at or near line 20 in file native_2.ncl
> ***********************************
> Here is how I introduced the file
> !!!!!!!!!
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
> ;*****************************************************
> begin
>  f1 = addfile("AirTempFeb11.nc","r")
>  Air=f1->Air
>
>  lat = f1->lat
>  lon = f1->lon
>  lat_len = dimsizes(lat)
>  lon_len = dimsizes(lon)
> ; time = f1-> time
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>
> I would appreciate assistance, where am I making the mistake?
> Appreciation
> Zilore
>
>
> On Mon, Mar 21, 2011 at 6:49 PM,  <gradsusr-request at gradsusr.org> wrote:
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>>
>> Today's Topics:
>>
>>   1. WRF output (Dr.Gamal El Afandi)
>>   2. Re: WRF output (hachelaf rabah)
>>   3. Regards Recipe-020: Spaghetti and Box-and-whisker plots   and
>>      sorting in Grads (Becker, Bernd)
>>   4. Re: Regards Recipe-020: Spaghetti and Box-and-whisker     plots
>>      and sorting in Grads (Jennifer Adams)
>>   5. Re: curvilinear data (Jennifer Adams)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Fri, 18 Mar 2011 13:11:03 -0700 (PDT)
>> From: "Dr.Gamal El Afandi" <gamalafandy at yahoo.com>
>> Subject: [gradsusr] WRF output
>> To: gradsusr at gradsusr.org
>> Message-ID: <144313.75860.qm at web113403.mail.gq1.yahoo.com>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Hi All,
>> Could you please let me know if anyone has some scripts to visualize wrf
>> output.
>> ?
>> With my kind regards
>> Gamal
>> _____________________________________________________
>> Dr.Gamal Salah El Afandi,Postdoctoral Fellow.
>> Data to Insight Center?of Pervasive Technology Institute
>> Indiana University Bloomington USA
>> 2719 E 10th St.
>> Innovation Center
>> Room 130C.?
>> Bloomington, IN ?47408,USA
>> Phone:+1 812-856-1953
>> Fax:?+1 812-856-1735
>> ?
>> http://www.indiana.edu.
>> http://pervasivetechnologylabs.iu.edu/d2i/people
>> ?
>> Al Azhar?University
>> Faculty of science?at Cairo?
>> Department of Astronomy and Meteorology
>> Nasr City,Postal Code 11884
>> Cairo,Egypt
>> http://www.uazhar.edu.eg/astmet/Gamal.htm
>> http://www.itap.purdue.edu/pto/NATO_KEEO/partCoDir_en.html
>> http://www.ucar.edu/governance/iap/iapreps.shtml
>> Tel. 0020238701259 Home???Tel. 0020222618163 Work
>> Tel. 0020103770593 Cell??????Fax 0020222629356 Work
>> ________________________________________________________
>>
>>
>>
>>
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>> ------------------------------
>>
>> Message: 2
>> Date: Fri, 18 Mar 2011 22:34:48 +0100
>> From: hachelaf rabah <r.hachelaf at gmail.com>
>> Subject: Re: [gradsusr] WRF output
>> To: GrADS Users Forum <gradsusr at gradsusr.org>
>> Message-ID:
>>        <AANLkTinsONf81SQ9=FdXLUaWu+WepBXXBieyrf6OAPO5 at mail.gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> Hello Dr.Gamal
>>
>> you can use ARWpost to generat .ctl and .data files
>> or with WPPV3 to convert netcdf WRF output to grib format and plot it
>> also with GRADS.
>> So what parameters you want to visualize.
>>
>>
>> 2011/3/18, Dr.Gamal El Afandi <gamalafandy at yahoo.com>:
>>> Hi All,
>>> Could you please let me know if anyone has some scripts to visualize wrf
>>> output.
>>>
>>> With my kind regards
>>> Gamal
>>> _____________________________________________________
>>> Dr.Gamal Salah El Afandi,Postdoctoral Fellow.
>>> Data to Insight Center of Pervasive Technology Institute
>>> Indiana University Bloomington USA
>>> 2719 E 10th St.
>>> Innovation Center
>>> Room 130C.
>>> Bloomington, IN  47408,USA
>>> Phone:+1 812-856-1953
>>> Fax: +1 812-856-1735
>>>
>>> http://www.indiana.edu.
>>> http://pervasivetechnologylabs.iu.edu/d2i/people
>>>
>>> Al Azhar University
>>> Faculty of science at Cairo
>>> Department of Astronomy and Meteorology
>>> Nasr City,Postal Code 11884
>>> Cairo,Egypt
>>> http://www.uazhar.edu.eg/astmet/Gamal.htm
>>> http://www.itap.purdue.edu/pto/NATO_KEEO/partCoDir_en.html
>>> http://www.ucar.edu/governance/iap/iapreps.shtml
>>> Tel. 0020238701259 Home   Tel. 0020222618163 Work
>>> Tel. 0020103770593 Cell      Fax 0020222629356 Work
>>> ________________________________________________________
>>>
>>>
>>>
>>>
>>
>>
>> --
>> Cordialement,
>> Best regards,
>> Rabah Hachelaf
>>
>>     ______
>>    (          )
>>   (            )
>>  (________)
>>     /////////
>>
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Mon, 21 Mar 2011 15:45:13 -0000
>> From: "Becker, Bernd" <bernd.becker at metoffice.gov.uk>
>> Subject: [gradsusr] Regards Recipe-020: Spaghetti and Box-and-whisker
>>        plots   and sorting in Grads
>> To: "GrADS Users Forum" <gradsusr at gradsusr.org>
>> Message-ID:
>>
>>  <E209E2066317644FB35E5AA0E8C1FB7F29EF40 at EXXMAIL02.desktop.frd.metoffice.com>
>>
>> Content-Type: text/plain;       charset="us-ascii"
>>
>>
>>
>> Hello,
>>
>> what have we available in Grads that can sort by size?
>>
>> In recipe-020, box and whisker plot ranges are calculated by
>> fraction of standard deviation.
>>
>> Assume, one were to plot quantiles after ranking:
>>
>> how would one achieve the ranking?
>>
>> of a stack of 2-d fields?
>>
>> This can be a compute intensive and time consuming affair.
>> But it would certainly be nice to have.
>>
>> (in metview, macro "distribution" does the trick)
>>
>> many thanks for your suggestions.
>>
>> Bernd.
>>
>>
>> --
>> Bernd Becker   Climate Impacts Product Development
>> Met Office Hadley Centre    FitzRoy Road  Exeter   Devon EX1 3PB  United
>> Kingdom
>> Tel.: +44 (0) 1392 884511 Fax: +44 (0)870 900 5050
>> E-mail:bernd.becker at metoffice.gov.uk -
>> http://www.metoffice.gov.uk/research/our-scientists/seasonal-to-decadal/
>> bernd-becker
>>
>>
>>
>>
>> ------------------------------
>>
>> Message: 4
>> Date: Mon, 21 Mar 2011 12:15:19 -0400
>> From: Jennifer Adams <jma at cola.iges.org>
>> Subject: Re: [gradsusr] Regards Recipe-020: Spaghetti and
>>        Box-and-whisker plots and sorting in Grads
>> To: GrADS Users Forum <gradsusr at gradsusr.org>
>> Message-ID: <17CAFB17-2803-4B28-A343-CE9613A06D44 at cola.iges.org>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> There's no way to do sorting in GrADS right now, but it's high on our
>> list of features we'd like to implement. It will fall under the
>> category of 'operations on define objects' and will require a fair bit
>> of available memory, depending on how much data you want to sort.
>> --Jennifer
>>
>>
>> On Mar 21, 2011, at 11:45 AM, Becker, Bernd wrote:
>>
>>>
>>>
>>> Hello,
>>>
>>> what have we available in Grads that can sort by size?
>>>
>>> In recipe-020, box and whisker plot ranges are calculated by
>>> fraction of standard deviation.
>>>
>>> Assume, one were to plot quantiles after ranking:
>>>
>>> how would one achieve the ranking?
>>>
>>> of a stack of 2-d fields?
>>>
>>> This can be a compute intensive and time consuming affair.
>>> But it would certainly be nice to have.
>>>
>>> (in metview, macro "distribution" does the trick)
>>>
>>> many thanks for your suggestions.
>>>
>>> Bernd.
>>>
>>>
>>> --
>>> Bernd Becker   Climate Impacts Product Development
>>> Met Office Hadley Centre    FitzRoy Road  Exeter   Devon EX1 3PB
>>> United
>>> Kingdom
>>> Tel.: +44 (0) 1392 884511 Fax: +44 (0)870 900 5050
>>> E-mail:bernd.becker at metoffice.gov.uk -
>>> http://www.metoffice.gov.uk/research/our-scientists/seasonal-to-decadal/
>>> bernd-becker
>>>
>>>
>>> _______________________________________________
>>> 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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>> ------------------------------
>>
>> Message: 5
>> Date: Mon, 21 Mar 2011 17:01:05 -0400
>> From: Jennifer Adams <jma at cola.iges.org>
>> Subject: Re: [gradsusr] curvilinear data
>> To: GrADS Users Forum <gradsusr at gradsusr.org>
>> Message-ID: <6D6ACA6F-1D68-48C8-9662-94783407FAE0 at cola.iges.org>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> It is possible to use PDEF to map curvilinear coordinates to a regular
>> lat/lon grid, but I have never tried, and I know of nobody who has
>> already done this with GrADS. It requires some knowledge of how to
>> convert any lat/lon value into real-valued i,j coordinates in the
>> curvilinear grid. It has always been easier to do this interpolation
>> outside of GrADS.
>> --Jennifer
>>
>>
>> On Mar 18, 2011, at 2:00 PM, James T. Potemra wrote:
>>
>>> As far as I know, GrADS will only be able to handle curvilinear grids
>>> that are curvilinear in one dimension, i.e., lat(i)/lon(i), not
>>> lat(i,j)/lon(i,j). Of course you can always make the control file
>>> whatever you want, but the display will not be correct.
>>>
>>> Jim
>>>
>>> Edward wrote:
>>>>
>>>> hi, gradsuser,
>>>>
>>>> Does anybody has an idea to deal with the curvilinear data in grads?
>>>> Do I need list all long/lat in ctl file? or  interpolate outside
>>>> grads
>>>> before grads?
>>>>
>>>> Thanks for any help.
>>>>
>>>>
>>>> Dawn
>>>> ------------------------------------------------------------------------
>>>>
>>>> _______________________________________________
>>>> gradsusr mailing list
>>>> gradsusr at gradsusr.org
>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>
>>> _______________________________________________
>>> 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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>>
>> End of gradsusr Digest, Vol 13, Issue 49
>> ****************************************
>>
>




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