[gradsusr] GrADS: Use of %
Davide Sacchetti
davide.sacchetti at arpal.gov.it
Tue Feb 4 11:17:08 EST 2014
% is useful, look at this
xlon=10
'set lon 'xlon -> OK
'set lon '%xlon -> OK, it is the same
'set lon '(xlon+1) -> NO, it does not work
'set lon '%(xlon+1) -> OK: xlon+1 is computed, then the entire string is
evaluated
hoping it helps
bye bye
Davide
On Tue, 2013-11-19 at 18:50 +0000, Mayes, Fred wrote:
> The script URL provides the following example:
>
> 'open my_sst_dataset.ctl'
> prompt 'Enter min and max latitudes: '
> pull minlat maxlat
> prompt 'Enter min and max longitudes: '
> pull minlon maxlon
> 'set lat 'minlat%' '%maxlat
> 'set lon 'minlon' 'maxlon
> 'display sst'
>
> Why is the "%" sign not used with the "set lon" command?
>
> Fred M.
>
> -----Original Message-----
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> Today's Topics:
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> 1. Re: Eurocentric global map (Cara Duckworth)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 19 Nov 2013 17:00:20 +0000
> From: Cara Duckworth <cara.duckworth at keble.ox.ac.uk>
> Subject: Re: [gradsusr] Eurocentric global map
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Message-ID:
> <A4E83836710D234FA6C4B8ECB9E60B1F3051C9 at MBX09.ad.oak.ox.ac.uk>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi Jim
>
> Thanks for your response. If I set lon to 180,540 the problem flips.
>
> If set lon to 0 540, no values are attached to 360+. Is there a way of sorting this?
>
> Best,
> Cara
>
> [cid:F62102ED-71DA-43A7-94A9-981A4C0488B5]
>
> On 19 Nov 2013, at 16:22, "James T. Potemra" <jimp at hawaii.edu<mailto:jimp at hawaii.edu>>
> wrote:
>
> Cara:
>
> Can you try 'set lon 180 540'? This should work if your longitude values are continuous.
>
> Jim
> On 11/19/13 5:44 AM, Cara Duckworth wrote:
> Hi Chuck,
>
> Thanks for your response. Yes, I just checked: lon = 0,360.
>
> Is there a way that I can change this so that I can plot the global map from lon -180 to 180 (with Europe in the middle)?
> When I plot it at lon=0,360, the map is fine but America is in the centre and I need Europe in the centre.
>
> Best,
> Cara
>
> On 19 Nov 2013, at 15:15, Charles Seman - NOAA Federal <charles.seman at noaa.gov<mailto:charles.seman at noaa.gov>> wrote:
>
> Cara,
>
> Check to see if the variable you're trying to plot has been defined locally in GrADS and what the longitude range is for it. I was able to replicate the issue by defining a local GrADS variable for lon = (0,360) and then when displaying it for lon = (-180,180) the left half was missing.
>
> Hope this helps,
> Chuck
>
> On 11/19/2013 09:33 AM, Cara Duckworth wrote:
> Thanks Alan and Chris,
>
> I'm still having troubles plotting the map.
> When I use "set lon -180 180", one half of the plot is missing (see image attached)
>
> Without this instruction the map is fine (with all data displayed), though Europe is not in the centre.
> Any ideas as to what I have done wrong?
>
> Best,
> Cara
>
>
>
>
>
> On 19 Nov 2013, at 13:25, Bill Reilly <bill_reilly at compuserve.com<mailto:bill_reilly at compuserve.com>
> <mailto:bill_reilly at compuserve.com>> wrote:
>
> Alan:
>
> I think you mean:
>
> set lon -180 180
>
> --
>
> Bill Reilly
> www.passageweather.com<http://www.passageweather.com> <http://www.passageweather.com>
>
> On 11/19/2013 1:30 PM, Alan Robock wrote:
> Dear Cara
>
> set lat -180 180
>
> or if you don't want to split Alaska:
>
> set lat -170 190
> Alan Robock
>
> Alan Robock, Distinguished Professor
> Editor, Reviews of Geophysics
> Director, Meteorology Undergraduate Program
> Department of Environmental Sciences Phone: +1-848-932-5751
> Rutgers University Fax: +1-732-932-8644
> 14 College Farm Road E-mail:robock at envsci.rutgers.edu<http://envsci.rutgers.edu>
> New Brunswick, NJ 08901-8551 USAhttp://envsci.rutgers.edu/~robock
> http://twitter.com/AlanRobock Watch my 18 min TEDx talk athttp://www.youtube.com/watch?v=qsrEk1oZ-54
>
> On 11/19/2013 6:54 AM, Cara Duckworth wrote:
> Dear users,
>
> I need to plot a global map, which is centred on the Prime Meridian (i.e. a Eurocentric map).
> Currently, the Prime Meridian is at either edge of my plot. How do I change this?
>
> Thanks,
> Cara
>
>
>
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> --
>
> Please note that Charles.Seman at noaa.gov<mailto:Charles.Seman at noaa.gov> should be considered my NOAA email address, not cjs at gfdl.noaa.gov<mailto:cjs at gfdl.noaa.gov>.
>
> ********************************************************************
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--
Davide Sacchetti
Centro Funzionale Meteo Idrologico di Protezione Civile della Regione Liguria
ARPAL Unità Tecnica Complessa di livello Regionale
V.le Brigare Partigiane 2 16121 Genova (I)
tel: +39 010 6437535 fax: +39 010 6437520
mail: davide.sacchetti at arpal.gov.it web: www.meteoliguria.it
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