On 2011-06-02 13:09, Galen Moore wrote:
Greetings –
Grateful for any help on this one:
In the following demo code, I am trying to get the points in the line to
appear over the same x-axis labels as are used by the paired Bars. It
appears, however, that R/lattice ignores the x-axis points used by the bars
and plots the x points for the line at ½ points.
Can you help me tweak this code so that the nth bump in the line appears
over the same nth pair of bars? I’m open to any options besides
lattice/barplot.
library(lattice)
aa<- abs(rnorm(c(1:10)))*5
bb<- abs(rnorm(c(1:10)))*5
cc<- abs(rnorm(c(1:10)))*5
dd<- as.matrix(cbind(aa, bb))
barplot(t(dd), beside=TRUE, ylim=c(0,10))
lines(cc)
What's lattice doing here? barplot() is not a lattice function.
Careful reading of the help page for barplot and study
of the examples will lead you to:
mp <- barplot(t(dd), beside=TRUE)
mp
lines(colMeans(mp), cc, col=2, lwd=3)
Peter Ehlers
Many thanks,
Galen
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