[R] ggplot2 multiple group barchart
Waller Gregor (wall)
wall at zhaw.ch
Wed Sep 1 17:15:52 CEST 2010
hi there.. i got a problem with ggplot2.
here my example:
library (ggplot2)
v1 <- c(1,2,3,3,4)
v2 <- c(4,3,1,1,9)
v3 <- c(3,5,7,2,9)
gender <- c("m","f","m","f","f")
d.data <- data.frame (v1, v2, v3, gender)
d.data
x <- names (d.data[1:3])
y <- mean (d.data[1:3])
pl <- ggplot (data=d.data, aes (x=x,y=y))
pl <- pl + geom_bar()
pl <- pl + coord_flip()
pl <- pl + geom_text (aes(label=round(y,1)),vjust=0.5,
hjust=4,colour="white", size=7)
pl
this gives me a nice barchart to compare the means of my variables
"v1","v2" and "v3".
my question: how do i have to proceed if i want this barchart splittet
by the variable "gender".
so i get two small bars for "v1", one for female and one for male, two
bars for "v2" etc.
i need them all in one chart.
fill=gender, position="dodge" do not work...
any ideas?
thanks a lot
greg
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