[ncl-talk] Zooming in WRF plot

[Ronald Opio]

Hello Mary and Rick.

You are right. I have followed the example below and it has worked out just
fine.

http://www.ncl.ucar.edu/Applications/Scripts/dataonmap_zoom_10.ncl


Thanks a lot.




Sincerely,

Ronald.

On Fri, Feb 23, 2018 at 3:07 AM, Mary Haley <haley at ucar.edu> wrote:

> Hi Ronald,
>
> Rick is right that wrf_map_resources is the issue.
>
> The sole purpose of wrf_map_resources is to look at your WRF file and set
> all the necessary mpXXXX resources needed to plot the data on the
> *original* WRF map projection defined on the file. It assumes you are
> plotting the full WRF data, unless you set the special "ZoomIn" attribute
> along with the Xstart / Xend / Ystart / Yend attributes.
>
> For examples on how to zoom in on WRF data, see:
>
> http://www.ncl.ucar.edu/Applications/wrfzoom.shtml
>
> In particular, if you want to zoom in on the data using a min/max lat/lon
> value like you were doing with the script you attached, then look at
> example wrf_zoom_3.ncl which shows how to do this. You cannot use
> wrf_map_resources in this case. The example explains more about this.
>
> If you want to use the WRF map projection defined on the file, but zoom in
> on it, then see example wrf_zoom_1.ncl on the above page.
>
> Good luck,
>
> --Mary
>
>
>
>
> On Thu, Feb 22, 2018 at 9:41 AM, Rick Brownrigg <brownrig at ucar.edu> wrote:
>
>> Hi Ronald,
>>
>> This is sheer speculation on my part, but it may be that the call to
>> wrf_map_resources() is resetting the mpMin/Max/Lat/Lon resources to the
>> full extent of the file.  You might try printing "res" after the call to
>> the function to verify, and if this is the case, the fix obviously is to
>> move the lines setting the extent you want to after the call.
>>
>> Hope that helps...
>> Rick
>>
>> On Thu, Feb 22, 2018 at 9:27 AM, Ronald Opio <opioronald123 at gmail.com>
>> wrote:
>>
>>> Hello colleagues.
>>>
>>> I am trying to zoom in a WRF plot to look like a TRMM rainfall plot that
>>> I have but its failing. How can I solve this problem.
>>>
>>> Here is my script plus the two plots and the TRMM file. I have not
>>> attached the WRF file because its a bit heavy.
>>>
>>>
>>>
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