Re: Overlaying filled contour plots

["Pavel A. Romashkin" <pavel.romashkin(at)noaa.gov>]

Couldn't you process the two data sets first and then visualize the
single result, instead of thinking how to combine two different visuals?
Cheers,
Pavel

Simon de Vet wrote:
> 
> I have two sets of data for a series of points.  One set indicates the
> values of a certain parameter, the others are the values of another
> parameter.
> 
> Is there a way to overlay two filled contour plots? I'd like, for
> example, to have one of the values plotted in red, the other in blue,
> with purple (or another colour) where they overlap. These contour maps
> have two levels each (on and off), so I don't need to worry about shades
> of red or shades of blue. I just need conours for four states: both on
> (purple), both off (white), one on other off and vice versa (red and
> blue).