[ncl-talk] draw order

[Jian Zheng]

Hi NCLers,

I want to draw some time series with a zero line and some filled boxes for
highlight. I use gsnYRefLine to draw the zero line and gsn_add_polygon to
draw the boxes. I find the boxes cover the zero line (see attachment). I
have set tfPolyDrawOrder as "Draw". Does anyone know how to set the order
to make the boxes at the bottom and NOT covering the zero line?

Thanks in advance.
Jian
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