Hi With ggplot2 I can very easily create beautiful histograms but I would like to put two histograms on the same plot. The histograms may be over-lapping. When they are overlapping the bars are shown on top of each other (so that the overall height is the sum of the two). Is there any way to get them to display overlapping (with smaller value in front, larger value behind) so that the overall height is equal to the height of the largest value
The following demonstrates the problem (there is probably a simple way to generate the sequence in d1 but I don't know it and just threw this together quickly) d1<-c(1,2,2,3,3,3,4,4,4,4,5,5,5,5,5,6,6,6,6,7,7,7,8,8,9,6,7,7,8,8,8,9,9,9,9,10,10,10,10,10,11,11,11,11,12,12,12,13,13,14,15,15,16,16,16,17,17,17,17,18,18,18,18,18) d2<-c(rep("a",25), rep("b",39)) dafr<-data.frame(d1,d2) library(ggplot) qplot(d1, data=dafr, fill=d2, geom='histogram', binwidth = 1) Many thanks for any help Sandy Sandy Small Clinical Physicist NHS Forth Valley and NHS Greater Glasgow and Clyde ******************************************************************************************************************** This message may contain confidential information. If yo...{{dropped:24}} ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.