Fill Value color transparent

Hello NCL–Talk,

I am attempting to make spatial maps with the fill_value being transparent. I think something switched between NCL5 to NCL6, because I have not changed my plotting scripts. The goal is to overlay images close to each other for a presentation, however the white background in the NCL6 plots causes the data to be obscured. Is there a way to turn off the fillvalue/white background?

Thanks,

-Jonathan

NCL5 plot

NCL6 plot

Example overlay obscuring data NCL6 plot.

Example overlay not obscuring data, NCL5 plot

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