[gradsusr] gradsusr Digest, Vol 13, Issue 49

Rashed Mahmood rashidcomsis at gmail.com
Fri Mar 25 06:17:38 EDT 2011


Hi Zilore

I guess you need to check your path for adding the file. It may be something
like this:

*in1=addfile("/mnt/storage-space/disk1/lshl/AirTempFeb11.nc","r")
*
**
*the path need to be specified like above so that ncl can find the file.*
*hope this helps*
**
*Rashed

*
On Fri, Mar 25, 2011 at 2:45 PM, 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:
> > Send gradsusr mailing list submissions to
> >        gradsusr at gradsusr.org
> >
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> >        gradsusr-request at gradsusr.org
> >
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> >        gradsusr-owner at gradsusr.org
> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of gradsusr digest..."
> >
> >
> > 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
> > ________________________________________________________
> >
> >
> >
> >
> > -------------- next part --------------
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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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> >
> > _______________________________________________
> > gradsusr mailing list
> > gradsusr at gradsusr.org
> > http://gradsusr.org/mailman/listinfo/gradsusr
> >
> >
> > End of gradsusr Digest, Vol 13, Issue 49
> > ****************************************
> >
>
> _______________________________________________
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>


-- 
========================
*Rashed Mahmood*
*PhD Student*
*Institute of Atmospheric Physics (IAP)*
*Chinese Academy of Sciences (CAS)*
*Beijing, China.*
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