trajectories crossing prime meridian

NCL users
I am trying to plot trajectory paths using gsn_polyline on a polar
stereographic projection ( gsn_csm_map_polar). The paths plot nicely
except where they cross the prime meridian where they then plot a whole
latitude circle before finishing correctly. I looked up the issue in the
mailing list and saw that one should have pres@mpGreatCircleLinesOn=True
in the code. I tried that and it didn't appear to do anything. (I have a
sample image available if that isn't clear).

I know the longitudes switch from 360 to 1 for the errant trajectories
and I assume that is the issue. I'd like to avoid trying to change the
longitudes as I would like the code to work for any trajectory and the
code logic might be complicated. Is there an way to do this w/o changing
longitudes?

(I am using NCL v 6.0.0 on redhat linux.)

Thanks for any advice.

Cathy Smith

-- 
----------------------------------------------
NOAA/ESRL PSD and CIRES CDC
303-497-6263
http://www.esrl.noaa.gov/psd/people/cathy.smith/
Emails about data/webpages may get quicker responses from emailing 
esrl.psd.data@noaa.gov
_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk