[ncl-talk] Duplicate a plot

[Carl Schreck]

I am making one plot that I want to overlay onto two other ones. When I
draw the other two, say:

plot1 = gsn_csm_xy(...
plot2 = gsn_csm_xy(...
plot3 = gsn_csm_xy(...

overlay(plot2,plot1)
overlay(plot3,plot1)

And this gives me an error:
fatal:NhlAddOverlay: tranform is already an annotation or overlay: 30

Is there a way to duplicate plot1 other than creating it from scratch
again? Just doing plot1b = plot1 and then overlaying plot1b doesn't fix it.

Thanks!
Carl

-- 


<https://ncics.org/>
* Cyclone <http://www.cyclonecenter.org/>*Center.org
<http://www.cyclonecenter.org/>   *Carl J. Schreck III, PhD*
*Research Scholar / Research **Assistant Professor*
Cooperative Institute for Climate and Satellites NC (CICS
<http://www.cicsnc.org/>*-NC) <http://www.cicsnc.org/> /*
Department of Marine, Earth, and Atmospheric Sciences (MEAS)
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North Carolina State University <http://ncsu.edu/>
NOAA National Centers for Environmental Information (NCEI)
<http://ncei.noaa.gov/>
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