[ncl-talk] overlaying of two polar maps

[Arnold.Sullivan at csiro.au]

Hi there,

Since we are not allowed to use any gsn_csm_*_map plotting functions to create the 2nd input in overlay, so how can we overlay two polar maps? Any trick?

Say the base is the Antarctic ice, and the second one is the mask both at polar region, and I would like to use the second plot overlay on to the first plot.

Cheers,

Arnold
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