Re: Re: [ncl-talk] Making a wrf_contour plot wider

Jan,

When you draw map projections with NCL, NCL doesn't (by default) want
to allow you to change the aspect ratio of the map.

If you want to make this map wider (hence skewing the map projection),
then you need to set the resource mpShapeMode to "FreeAspect".

In your script, I believe you just need to add the following two
resources (I tried it on a sample WRF script and it worked for me):

         ...
         res_at_mpShapeMode = "FreeAspect"
         res_at_vpWidthF = 0.8 ; Or whatever width you want.
         map = wrf_map(wks, a, res)

I should point out that the wrf_xxxx plotting scripts are not meant to
be highly customizable. If you don't need these WRF style of scripts
(with the automatic extra titles at the top), then you can use
gsn_csm_xxxx routines, combined with WRF_map_c. You can see some
examples at:

   http://www.ncl.ucar.edu/Applications/wrf.shtml

--Mary

On Thu, 19 Jun 2008, Jan Ploski wrote:

> Mary Haley <haley_at_ucar.edu> schrieb am 06/17/2008 12:46:54 AM:
>
>> Jan,
>>
>> Setting res_at_vpWidthF seems to work for me when I call wrf_contour, but
>> I also had to set the res_at_vpXF resource to 0.07 to shift it closer to
>> the left side to make room for a wider plot.
>
> Mary,
>
> Thanks for the suggestion, but unfortunately it does not work for me.
>
>> Are you just calling wrf_contour, or other plotting routines as well,
>> like wrf_overlay?
>
> I'm also calling wrf_map_overlay after wrf_contour. I tried tweaking
> vpWidthF and vpXF as can be seen in the uploaded script and outputs:
>
> http://bi.offis.uni-oldenburg.de/wrf_contour/
>
> Setting vpXF=0.0 and vpWidthF=1.0 didn't help. Passing the same resource
> (instead of False) to wrf_map_overlay had no effect either.
>
> I have general trouble understanding how the width of the plot (e.g., in
> PostScript points) is calculated by NCL - all the vpXXX coordinates and
> dimensions are relative to the "plotting device space", but what
> determines how wide the whole plotting device is? I tried setting
> type_at_wkDeviceUpperX = 1000 when initializing the workstation, but it
> didn't change anything.
>
> Regards,
> Jan Ploski
>
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Received on Thu Jun 19 2008 - 11:05:27 MDT