[R] lattice package: Changing colors in graphs

Bert Gunter gunter.berton at gene.com
Thu Feb 25 06:25:41 CET 2010



... and in general panel.whatever for whatever() lattice functions.
Typically graphical parameters are passed though the ... arguments. You need
to **carefully** read the docs. 

Bert Gunter
Genentech Nonclinical Statistics

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of Ravi Kulkarni
Sent: Wednesday, February 24, 2010 7:57 PM
To: r-help at r-project.org
Subject: [R] lattice package: Changing colors in graphs

Giving different colors to plots of different levels of a factor can
be pleasing. For a boxplot, for example, the following produces a nice

boxplot(len~supp*dose, data=ToothGrowth, col=c("orange","gray"))

 If I try to specify (using the lattice package)

histogram(~len|supp*factor(dose), data=ToothGrowth, col=c("orange","gray"))

 the effect is unexpected! (and certainly not desirable)

How does one do the same with histograms using the lattice package?
Also, how do I get more control over the colors of the "title bars"
for each pane in the lattice of graphs using the lattice package?


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