Re: polar stereographic

Hi Roni,

The easiest way to do this is to use a Lambert Conformal projection plot:

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

I would set the following resources:

sres@mpMinLonF = 90.
sres@mpMaxLonF = -90.
sres@mpMinLatF = 20.
sres@mpMaxLatF = 85.
sres@mpProjection="LambertConformal"
sres@tmBorderThicknessF = 3.
sres@gsnMaskLambertConformal = True

If you wanted to draw a rectangular box around the plot, this can be
done by using gsn_polyline_ndc:
http://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_polyline_ndc.shtml

You could try to draw a polar stereographic plot and mask the top half
of it with gsn_polygon_ndc:
http://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_polygon_ndc.shtml

But this method could get complicated especially if you want to use
gsn_panel.

Good luck,
Adam

rravia_at_po-box.mcgill.ca wrote:
> Hi,
> Is there a way to plot only half of the sphere? Say, in example
> polar_1.ncl, to plot only from 90W to 90E counterclockwise.
> Also is there a way to put the half sphere in a rectangular frame?
> Thanks, Roni
> _______________________________________________
> ncl-talk mailing list
> ncl-talk_at_ucar.edu
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk

-- 
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Adam Phillips			             asphilli_at_ucar.edu
National Center for Atmospheric Research   tel: (303) 497-1726
ESSL/CGD/CAS                               fax: (303) 497-1333
P.O. Box 3000				
Boulder, CO 80307-3000	  http://www.cgd.ucar.edu/cas/asphilli
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