R: bar plot with two groups, of which one is stacked

Question

I\'ve encountered a small problem when creating a bar plot in R. There are 3 variables:

a <- c(3,3,2,1,0)
b <- c(3,2,2,2,2)
c <- 0:4

Answer 1

Try the lattice lib:

library("lattice")
MyData <- as.data.frame(Titanic)

barchart(Freq ~ Survived | Age * Sex, groups = Class, data = MyData,
         auto.key = list(points = FALSE, rectangles = TRUE, space
         = "right", title = "Class", border = TRUE), xlab = "Survived",
         ylim = c(0, 800))

As you can see the grouping and ploting is done at once.

Please also see: https://stat.ethz.ch/pipermail/r-help/2004-June/053216.html