Black and white shadding plot for positive and negative values

Hello:

I want to plot field differences with both positive and negative values with NCL. The color table such as posneg_1 can easily show the values and looks excellent. However, to save money for publication, I have to use black and white shading.
I want to use darker black shading to show larger positive and negative values but with different texture so that one can easily tell the negative or positive values
I checked the color table of NCL but couldn't find the one I want. I am wondering in the community if someone have created a NCL script to plot the kind of black white shading figure I described above? Can I share your script? Thanks!

Ed

      
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Received on Mon Aug 24 2009 - 17:37:36 MDT