line plot; how to color shade above/below say, 1sd level

Muthuvel Chelliah Muthuvel.Chelliah at NOAA.GOV
Thu Aug 17 11:38:33 EDT 2006


Hello,

In a line plot (of say SOI), can someone please tell me how to
shade/color_fill in diff. colors values above/below certain levels.
I hope I am making myself clear.

thanks a lot
Muthu



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