Re: Polar Map Mask

Hi Jessica,
I could be wrong, but I think that gsn_csm_map_polar is designed to work only with the center of the plot at the north or south pole.
However you should be able to create a stereographic projection that does not include the poles and have grid lines as well as labels if you are willing to have rectangular boundaries.
You will need to play with the resources: mpGridAndLimbOn, mpGridSpacingF (or alternatively mpGridLatSpacingF and mpGridLonSpacingF). For tick marks and labels set
pmTickMarkDisplayMode = "always".

If you are still having trouble send us the code as you have it, and also if possible a picture or other indicator of the area you are trying to focus on.
 -dave

On Apr 25, 2013, at 1:00 PM, Jessica Scheick <jessica.scheick@maine.edu> wrote:

> Hey everyone,
>
> I've been trying to make a polar map that zooms in on an area that does not include the south pole and displays lat/lon gridlines and labels.
>
> Using gsn_csm_map_polar and mpLimitMode=Angles I'm able to generate a mask but when I add gridlines they converge to a point at the top of the graph (which is not the pole, my center latitude), I can't get them to be labeled, and I get errors as follows:
> fatal:NhlCvtStringToEnum: Unable to convert string "missing" to requested type
> warning:Error retrieving resource amJust from args - Ignoring Arg
> fatal:NhlCvtStringToEnum: Unable to convert string "missing" to requested type
> warning:Error retrieving resource amSide from args - Ignoring Arg
> (if I add in the resources amJust and amSide I also get errors)
>
> Using gsn_csm_map with a stereographic projection and mpLimitMode=Angles I'm again able to generate a mask but no gridlines or lat/lon labels.
>
> I'm currently trying to add labels to a mask with a LambertConformal projection, though this is not my preferred projection.
>
> Any suggestions? In my perusal of the map examples I haven't found any that show a zoomed in mask of a polar region [that doesn't include the pole].
>
> Thanks!
> ~Jessica Scheick
>
> jessica.scheick@maine.edu
> PhD Student
> IGERT Trainee
> School of Earth and Climate Sciences
> Climate Change Institute
> University of Maine
> Orono, ME
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Received on Thu Apr 25 13:22:46 2013