Paul Hiemstra <paul.hiemstra <at> knmi.nl> writes: > > Hi, > > When using ggplot, take a look at facet_wrap and geom_histogram. > > regards, More specifically, try something along the lines of d <- data.frame(f=factor(paste("chr",rep(c(1,2,3,7,9,22),each=50),sep="")), v=runif(300)) library(ggplot2) ggplot(d,aes(x=v))+geom_histogram()+facet_wrap(~f)