Using traj.gs

[James T. Potemra]

Make sure you change it in both U and V ctl files.  Also, I noticed that
you only have 1 time-step, and you'll need at least two.

Jim

Jason Snyder wrote:
> I still get the same message about hours or  minute missing in TDEF.
>  
>  
> Jason
>
> On Sun, Jan 24, 2010 at 4:57 PM, James T. Potemra <jimp at hawaii.edu 
> <mailto:jimp at hawaii.edu>> wrote:
>
>     You have to change the TDEF line to be either HR or MN.
>     Right now you have 1dy; make it 24HR.
>
>     Jim
>
>     Jason Snyder wrote:
>
>
>
>         On Sun, Jan 24, 2010 at 4:16 PM, Jason Snyder
>         <jmssnyder at ucdavis.edu <mailto:jmssnyder at ucdavis.edu>
>         <mailto:jmssnyder at ucdavis.edu <mailto:jmssnyder at ucdavis.edu>>>
>         wrote:
>
>            I tried running traj.gs <http://traj.gs/> <http://traj.gs/>
>         again after displaying a
>
>            map and I got the following message:
>                ga-> d U;V
>            ga-> traj.gs <http://traj.gs/> <http://traj.gs/>
>
>            HR or MN missing in line TDEF of file uninan.ctl
>            ga->
>            Here is an example of a .ctl file I have for the zonal wind
>         part
>            of my data:
>                DSET uninan2.nc <http://uninan2.nc/> <http://uninan2.nc/>
>
>            OPTIONS template
>            DTYPE netcdf
>            XDEF longitude 57 linear 110.0 2.5
>            YDEF latitude 39 linear -5 2.5
>            TDEF time 1 linear 0z1Jun1974 1dy 0hr 0mn
>            How do I modify this file so I can succesfuuly run traj.gs
>         <http://traj.gs/>
>            <http://traj.gs/>?
>
>                Thanks,
>                Jason
>            On Sun, Jan 24, 2010 at 2:59 PM, James T. Potemra
>         <jimp at hawaii.edu <mailto:jimp at hawaii.edu>
>            <mailto:jimp at hawaii.edu <mailto:jimp at hawaii.edu>>> wrote:
>
>                Jason:
>
>                The script requires that you first display a variable
>         (it uses
>                the GrADS query function to get plot dimensions).  If you
>                don't want to actually display something "under" your
>                trajectory, you can "set cmin" to something larger than U
>                and/or V, then display U and/or V, then run traj.gs
>         <http://traj.gs/>
>                <http://traj.gs/>
>
>
>                Jim
>
>                Jason Snyder wrote:
>
>                    I am trying to open up two files one with a zonal wind
>                    componant and the other with the meridional wind
>         componant
>                    to use to make a trajectory via traj.gs
>         <http://traj.gs/> <http://traj.gs/>
>                    <http://traj.gs <http://traj.gs/>
>         <http://traj.gs/>> script.
>
>
>                     Here is the .ctl file for the zonal wind:
>                     DSET uwndavg2001.nc <http://uwndavg2001.nc/>
>         <http://uwndavg2001.nc/>
>                    <http://uwndavg2001.nc <http://uwndavg2001.nc/>
>         <http://uwndavg2001.nc/>>
>
>
>                    OPTIONS template
>                    DTYPE netcdf
>                    XDEF longitude 144 linear 0.0 2.5
>                    YDEF latitude 73 linear -90 2.5
>                    TDEF time 1 linear 0z1Jan2001 1dy
>                     Here is the .ctl file for the meridional wind:
>                     DSET vwndavg2001.nc <http://vwndavg2001.nc/>
>         <http://vwndavg2001.nc/>
>                    <http://vwndavg2001.nc <http://vwndavg2001.nc/>
>         <http://vwndavg2001.nc/>>
>
>
>                    OPTIONS template
>                    DTYPE netcdf
>                    XDEF longitude 144 linear 0.0 2.5
>                    YDEF latitude 73 linear -90 2.5
>                    TDEF time 1 linear 0z1Jan2001 1dy
>                     The variables for both are U and V respectively.
>          However
>                    since the meridional file is open second the meridional
>                    wind becomes defined as V.2.  Therefore, I have to
>                    redefine V=V.2.  However when I run GrADS script
>         traj.gs <http://traj.gs/>
>                    <http://traj.gs/> <http://traj.gs <http://traj.gs/>
>         <http://traj.gs/>> I get
>
>                    the following message:
>
>                      Please open file and draw a chart
>                     How can I avoid this message and run traj.gs
>         <http://traj.gs/>
>                    <http://traj.gs/> <http://traj.gs <http://traj.gs/>
>         <http://traj.gs/>>
>                    successfully?
>                     Thanks,
>                     Jason
>
>
>
>