[gradsusr] Drawing something (line, point,...) over the map

hersala hersala at gmail.com
Sat Aug 11 09:28:28 EDT 2012 

Dear Tahereh,
Perhaps this example is useful to you:
http://cookbooks.opengrads.org/index.php?title=Recipe-026:_Using_World_Coordinates_to_Annotate_your_Plots

Regards,
Hernán


On 11 August 2012 00:25, T. haghroosta <haghroosta at hotmail.com> wrote:

>  Dear Galebonwe,
>
> I did it, but unfortunately it didn't work. I got these errors:
> 1-  query error : syntax is query w2xy lon lat
> 2- draw error : invalid line coordinate
>
> Now what should I do?
>
> Regards,
> Tahereh
>
>  > From: gradsusr-request at gradsusr.org
> > Subject: gradsusr Digest, Vol 30, Issue 21
> > To: gradsusr at gradsusr.org
> > Date: Fri, 10 Aug 2012 10:08:42 -0400
> >
> > Send gradsusr mailing list submissions to
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> >
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> > than "Re: Contents of gradsusr digest..."
> >
> >
> > Today's Topics:
> >
> > 1. Re: How to calculate the pressure gradient? (Djordje Romanic)
> > 2. (no subject) (Kouakou Kouadio)
> > 3. Re: Drawing something (line, point,...) over th! e map
> > (Galebonwe Ramaphane)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Fri, 10 Aug 2012 14:09:17 +0200
> > From: Djordje Romanic <djordje8 at gmail.com>
> > Subject: Re: [gradsusr] How to calculate the pressure gradient?
> > To: GrADS Users Forum <gradsusr at gradsusr.org>
> > Message-ID:
> > <CACWmqDdvhR7XwaN-PVDfWrpf8MhRtjt9PFT8KP-adveg9S7XjQ at mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > Thanks Jeff...
> >
> > Cheers,
> > Djordje
> >
> >
> >
> > On Thu, Aug 9, 2012 at 6:30 PM, Jeff Duda <jeffduda319 at gmail.com> wrote:
> >
> > > Djordje,
> > > Since cdiff performs a centered difference, if you use the expressions
> > > suggested by another Grads user on this thread, you would only want to
> use
> > > dx since 2*dx is already implie! d in the definition.
> > >
> > > Jeff
> > >
> &g t; >
> > > On Thu, Aug 9, 2012 at 1:50 AM, Djordje Romanic <djordje8 at gmail.com
> >wrote:
> > >
> > >> Thanks,
> > >>
> > >> Since I only need the pressure gradient, and not the pressure gradient
> > >> force, I should exclude 1/rho. Just one clarification. When I use
> cdiff
> > >> function for pressure (e.g. in LON direction), should I divide it
> with dx
> > >> or 2*dx. I believe that 2*dx would be correct.
> > >>
> > >> Regards,
> > >> Djordje
> > >>
> > >>
> > >> On Wed, Aug 8, 2012 at 7:08 PM, Jeff Duda <jeffduda319 at gmail.com>
> wrote:
> > >>
> > >>> The pressure gradient is simply 1/rho * del(p), where del(p) is the
> > >>> gradient operator, which can be displayed in Grads using the
> mathematical
> > >>> decomposition of the gradient operator (i.e., derivatives in the x-
> and
> > ! >>> y-directions). Use cdiff for those derivatives. Note, you'll have
> to
> > >>> define your x- and y- grid spacing values as well. See the examples
> on the cdiff
> > >>> help page <http://www.iges.org/grads/gadoc/gradfunccdiff.html> for
> how
> > >>> to do that.
> > >>>
> > >>> Jeff Duda
> > >>>
> > >>> On Wed, Aug 8, 2012 at 5:48 AM, Djordje Romanic <djordje8 at gmail.com
> >wrote:
> > >>>
> > >>>> Dear Users,
> > >>>>
> > >>>> I have to calculate the pressure gradient in a given area (Southeast
> > >>>> Europe) and I have a pressure date at 2.5 x 2.5 degrees (reanalysis
> data).
> > >>>> Does anyone know how to calculate it in GrADS and how to show the
> results
> > >>>> in the vector form?
> > >>>>
> > >>>> Thanks in advance.
> > ! >>>>
> > >>>> Regards,
> > >>&gt ;> Djordje Romanic
> > >>>> M.Sc. in Meteorology
> > >>>> Cell: +38164 254 3539
> > >>>> www.linkedin.com (Djordje Romanic profile)
> > >>>>
> > >>>>
> > >>>> _______________________________________________
> > >>>> gradsusr mailing list
> > >>>> gradsusr at gradsusr.org
> > >>>> http://gradsusr.org/mailman/listinfo/gradsusr
> > >>>>
> > >>>>
> > >>>
> > >>>
> > >>> --
> > >>> Jeff Duda
> > >>> Graduate research assistant
> > >>> University of Oklahoma School of Meteorology
> > >>> Center for Analysis and Prediction of Storms
> > >>>
> > >>>
> > >>> _______________________________________________
> > >>> gradsusr mailing list
> > >>> gradsusr at gradsu! sr.org
> > >>> http://gradsusr.org/mailman/listinfo/gradsusr
> > >>>
> > >>>
> > >>
> > >> _______________________________________________
> > >> gradsusr mailing list
> > >> gradsusr at gradsusr.org
> > >> http://gradsusr.org/mailman/listinfo/gradsusr
> > >>
> > >>
> > >
> > >
> > > --
> > > Jeff Duda
> > > Graduate research assistant
> > > University of Oklahoma School of Meteorology
> > > Center for Analysis and Prediction of Storms
> > >
> > >
> > > _______________________________________________
> > > gradsusr mailing list
> > > gradsusr at gradsusr.org
> > > http://gradsusr.org/mailman/listinfo/gradsusr
> > >
> > >
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
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> >
> > --------- ---------------------
> >
> > Message: 2
> > Date: Fri, 10 Aug 2012 13:29:28 +0000
> > From: Kouakou Kouadio <kouekkd at gmail.com>
> > Subject: [gradsusr] (no subject)
> > To: gradsusr at gradsusr.org
> > Message-ID:
> > <CACjBvToO5W70-76DpQq3QfPNa1dQwuP-qHMABPgmr-0MjAE+Lg at mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > Dear Users,
> >
> > I'm trying to install grads-2.0.a8.oga.1 on my laptop.
> > I respect the different instructions. I use suse 12.1.
> > When i execute grads i met the following message:
> >
> > grads: missing required directory
> > </opt/opengrads/Linux/i686> --->
> > at /opt/opengrads/grads line 157.
> >
> > In the /opt/opengrads/Linux/ directory i can't found the file i686 but i
> > met x86_64\@..
> >
> > I don't now what i can do.
> > Please give me any proposition to resolve this problem.
> >
> > **>
> > Thanks in advance.
> >
> >
> > Kouadio Kouakou
> >
> > Doctorant au Laboratoire Lapa-MF (Universit? de Cocody Abidjan)
> > C?te d'Ivoire.
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL:
> http://gradsusr.org/pipermail/gradsusr/attachments/20120810/0b9a4599/attachment-0001.html
> >
> > ------------------------------
> >
> > Message: 3
> > Date: Fri, 10 Aug 2012 16:08:22 +0200
> > From: "Galebonwe Ramaphane" <GRamaphane at gov.bw>
> > Subject: Re: [gradsusr] Drawing something (line, point,...) over the
> > map
> > To: "GrADS Users Forum" <gradsusr at gradsusr.org>
> > Message-ID:
> > <C29C568A454A0849982F608873BBC01D016B6746 at imsnt001.meteo.gov.bw>
> > Content-Type: text/plain; charset="us-ascii"
> >
> > Tahereh,
> >
> >
> >
> > Try this:
> >
> >
> >
> > Set line 2 1 6
> ! > lon1= 120.6
> > lat1= 8.3
> > q w2xy lon1 lat1
> > x1 = subwrd(result,3)
> > y1 = subwrd(result,6)
> > lon2= 119.3
> > lat2= 9
> > q w2xy lon2 'lat2
> > x2 = subwrd(result,3)
> > y2 = subwrd(result,6)
> > draw line x1 y1 x2 y2
> >
> >
> >
> > Hope it helps.
> >
> >
> >
> > Galebonwe Ramaphane
> >
> > Department of Meteorological Services
> >
> > P.O. BOX 10100
> >
> > Gaborone
> >
> > Botswana
> >
> > Tel: +267 3612200
> >
> > Mobile: +267 74435261
> >
> >
> >
> > From: gradsusr-bounces at gradsusr.org
> > [mailto:gradsusr-bounces at gradsusr.org] On Behalf Of T. haghroosta
> > Sent: Thursday, August 09, 2012 7:58 PM
> > To: gradsusr at gradsusr.org
> > Subject: Re: [gradsusr] Drawing something (line, point,...) over the map
> >
> >
> >
> > Dear Jennifer,
> >
> > I did it but it didn't work. Maybe I didn't do that correctly. Could you
> > please explai! n more. As an example here is my work : I would like to
> > show points (8.3 120.6) and (9 119.3) and also the line between them
> > over my maps.
> >
> >
> > Latitude
> >
> > longitude
> >
> > 8.3
> >
> > 120.6
> >
> > 9
> >
> > 119.3
> >
> >
> >
> > Regards,
> >
> > Tahereh
> >
> >
> >
> > > From: gradsusr-request at gradsusr.org
> > > Subject: gradsusr Digest, Vol 30, Issue 19
> > > To: gradsusr at gradsusr.org
> > > Date: Thu, 9 Aug 2012 12:00:01 -0400
> > >
> > > Send gradsusr mailing list submissions to
> > > gradsusr at gradsusr.org
> > >
> > > To subscribe or unsubscribe via the World Wide Web, visit
> > > http://gradsusr.org/mailman/listinfo/gradsusr
> > > or, via email, send a message with subject or body 'help' to
> > > gradsusr-request at gradsusr.org
> > >
> > > You! can reach the person managing the list at
> > > gradsusr-owner @gradsusr.org
> > >
> > > When replying, please edit your Subject line so it is more specific
> > > than "Re: Contents of gradsusr digest..."
> > >
> > >
> > > Today's Topics:
> > >
> > > 1. Drawing something (line, point,...) over the map (T. haghroosta)
> > > 2. Re: How to calculate the pressure gradient? (Djordje Romanic)
> > > 3. Re: Drawing so! mething (line, point,...) over the map
> > > (Jennifer Adams)
> > >
> > >
> > > ----------------------------------------------------------------------
> > >
> > > Message: 1
> > > Date: Thu, 9 Aug 2012 06:29:08 +0000
> > > From: "T. haghroosta" <haghroosta at hotmail.com>
> > > Subject: [gradsusr] Drawing something (line, point,...) over the map
> > > To: <gradsusr at gradsusr.org>
> > > Message-ID: <SNT104-W2403A6A7F39D90ECA64A85DDCC0 at phx.gbl>
> > > Content-T! ype: text/plain; charset="windows-1256"
> > >
> > >
> > > Dear All,
> > >
> > > I have to repeat my question, Is it possible to draw a path with
> > specific coordinates? For example I would like to show the position or
> > the track (moving path) of a typhoon on a map. Is it possible to put
> > some points (with specific coordinates) or lines on a map seperate from
> > contours?
> > >
> > > Regards,
> > >
> > > Tahereh
> > > -------------- next part --------------
> > &g! t; An HTML attachment was scrubbed...
> > > URL: http://gradsusr.org
> > /pipermail/gradsusr/attachments/20120809/31e826ca/attachment-0001.html
> > >
> > > ------------------------------
> > >
> > > Message: 2
> > > Date: Thu, 9 Aug 2012 08:50:25 +0200
> > > From: Djordje Romanic <djordje8 at gmail.com>
> > > Subject: Re: [gradsusr] How to ca! lculate the pressure gradient?
> > > To: GrADS Users Forum < gradsusr at gradsusr.org>
> > > Message-ID:
> > > <CACWmqDci6TS4nRbjv=RRU3bvvGPW=Q-zRTmGoNTETK+=k3MsYw at mail.gmail.com>
> > > Content-Type: text/plain; charset="iso-8859-1"
> > >
> > > Thanks,
> > >
> > > Since I only need the pressure gradient, and not the pressure gradient
> > > force, I should exclude 1/rho. Just one clarification. When I use
> > cdiff
> > > function for pressure (e.g. in LON direction), should I divide it with
> > dx
> > > or 2*dx. I believe that 2*dx would be correct.
> > >
> > > Regards,
> > > Djordje
> > >
> > >
> > > On Wed, Aug 8, 2012 at 7:08 PM, Jeff Duda <jeffd! uda319 at gmail.com>
> > wrote:
> > >
> > > > The pressure gradient is simply 1/rho * del(p), where del(p) is the
> > > > gradient operator, which can be displayed in Grads using the
> > mathematical
> > > > deco! mposition of the gradient operator (i.e., derivatives in the x-
> > and
> > > > y-directions). Use cdiff for those derivatives. Note, you'll have to
> > > > define your x- and y- grid spacing values as well. See the examples
> > on the cdiff
> > > > help page <http://www.iges.org/grads/gadoc/gradfunccdiff.html> for
> > how to
> > > > do that.
> > > >
> > > > Jeff Duda
> > > >
> > > > On Wed, Aug 8, 2012 at 5:48 AM, Djordje Romanic
> > <djordje8 at gmail.com>wrote:
> > > >
> > > >> Dear Users,
> > > >>
> > > >> I have to calculate the pressure gradient in a given area
> > (Southeast
> > > >> Europe) and I have a pressure date at 2.5 x 2.5 degrees (reanalysis
> > data).
> > > >> Does anyon! e know how to calculate it in GrADS and how to show the
> > results
> > > ; >> in the! vector form?
> > > >>
> > > >> Thanks in ad vance.
> > > >>
> > > >> Regards,
> > > >> Djordje Romanic
> > > >> M.Sc. in Meteorology
> > > >> Cell: +38164 254 3539
> > > >> www.linkedin.com (Djordje Romanic profile)
> > > >>
> > > >>
> > > >> _______________________________________________
> > > >> gradsusr mailing list
> > > >> gradsusr at gradsusr.org
> > > >> http://gradsusr.org/mailman/listinfo/gradsusr
> > > >>
> > > >>
> > > >
> > > >
> > > > --
> > > > Jeff Duda
> > > > Graduate research assistant
> > > > University of Oklahoma School of Meteorology
> > > > Center for Analysis and Prediction of Storms
> > > >
> > > >
> > > > _______________________________________________
> > > > gradsusr mailing list
> > > > gradsusr! @gradsusr.org
> > > > http://gradsusr.org/mailma! n/listinfo/gradsusr
> > > >
> > > >
> > > -------------- next part --------------
> > > An HTML attachment was scrubbed...
> > > URL:
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> > achment-0001.html
> > >
> > > ------------------------------
> > >
> > > Message: 3
> > > Date: Thu, 9 Aug 2012 06:56:13 -0400
> > > From: Jennifer Adams <jma at cola.iges.org>
> > > Subject: Re: [gradsusr] Drawing something (line, point,...) over the
> > > map
> > > To: GrADS Users Forum <gradsusr at gradsusr.org>
> > > Message-ID: <50D53664-74F9-4A5D-9998-DE85D9E72D7A at cola.iges.org>
> > > Content-Type: text/plain; charset="us-ascii"
> > >
> > > Yes. Use 'qw2xy' to convert world coordinates to x,y coordinates on
> > the page. Then use 'draw line'! to connect the points.
> > > --Jennifer
> > >
> > >
> > > On Aug 9, 2012, at 2:29 AM, T. haghroosta wrote:
> > >
> > > > Dear All,
> > > >
> > > &g! t; I have to repeat my question, Is it possible to draw a path
> > with sp ecific coordinates? For example I would like to show the
> > position or the track (moving path) of a typhoon on a map. Is it
> > possible to put some points (with specific coordinates) or lines on a
> > map seperate from contours?
> > > >
> > > > Regards,
> > > >
> > > > Tahereh
> > > > _______________________________________________
> > > > 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
> > >
> &gt! ; >
> > >
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> > >
> > > ------------------------------
> > >
> > > _______________________________________________
> > > gradsu! sr mailing list
> > > gradsusr at gradsusr.org
> > > http://gradsusr.org/mailman/listinfo/gradsusr
> > >
> > >
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> >
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> > gradsusr at gradsusr.org
> > http://gradsusr.org/mailman/l istinfo/gradsusr
> >
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