Hi R-people, I hope someone could help me. I have to draw a population pyramid, but using histbackback (in Hmisc library) function I've got just histograms of density or frequency of my distribution. How can I get a population pyramid without playing on barplot function? I give a simple example that, solved, would help me. # dataset x1 <- c(100, 80, 60, 40, 20, 10) x2 <- c(95, 85, 65, 45, 15, 5) x3 <- -x2 # a too simple pyramid with barplots (I could use other options for possible improvements) par(mfrow=c(1,2)) barplot(x3, horiz=TRUE) barplot(x1, horiz=TRUE) # what I could get from histbackback function library(Hmisc) par(mfrow=c(1,1)) histbackback(x1, x2, xlab=c("males", "females")) Thanks in advance, Giancarlo +++++ This mail has been sent through the MPI for Demographic Rese...{{dropped}}