[R] How to properly shade the background panels of an xyplot?

Hi: Here is simplified example of what I am having trouble with: I want to set the gray shade of the background of each panel of a xyplot with its mean. My aim is to be able to compare at a glance which panel has the highest mean. But, in order to achieve this I have to normalize the means between

Re: [R] How to properly shade the background panels of an xyplot?

On Thu, May 7, 2009 at 2:50 PM, Daniel Kornhauser wrote: > Hi: > > Here is simplified example of what I am having trouble with: > I want to set the gray shade of the background of each panel of a > xyplot with its mean. > My aim is to be able to compare at a glance which panel has the highest mean