fixed color scale for a series of contour plots

You don't tell us which function you use, but fixing the zlim argument
in image or related functions should do the trick.
M.
-----Original Message-----
From: r-help-bounces at r-project.org 
[mailto:r-help-bounces at r-project.org] On Behalf Of Marion Dumas
Sent: Dienstag, 3. November 2009 14:38
To: r-help at r-project.org
Subject: [R] fixed color scale for a series of contour plots

Hello,
I am having trouble figuring out how to create a color scale 
that will be consistent across multiple contour plots. What I 
would like is to plot a series of contour or image plots for 
different subsets of a data set but make sure that the color 
key stays fixed so that the plots are easily comparable. That 
is I need a map from the range of values of the entire data 
set to the color scale and keep then use this color scale for 
all plots + be able to display the color bar as a legend next 
to the plot. This sounds trivial, but I can't find useful 
hints in the documentation of the color arguments of the 
different plots.
Thanks so much for any help
Best
Marion

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fixed color scale for a series of contour plots

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