Using traj.gs

[Jason Snyder]

>
>  I changed the TDEF in both files but to no avail.  I still get the same
>> message.
>>
> 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
>>
>>
>>
>>
>>
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