Add markers or curves to existing xy2 plot array

Hi NCL users,

I was wondering how to add markers or curves to an existing XY plot with
two different y/x axes.
I find how to do it with scaler plot from xy_25.ncl and xy_26.ncl:

dum1 = gsn_add_polyline(wks,plot@xy2,time,p1,lnres)

What if my plot is an array?
I tried plot(i)@xy2 or plot@xy2(i); but they didn't work, actually as I
expected.
So it there a way to complete this?

Thank you!

Best,
Wenshan
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Graduate Student Researcher
Earth System Science
University of California, Irvine

Received on Wed Jul 16 08:52:23 2014