Hi, I am trying create a grouped barplot (with beside=T) and would like to plot the bar groups, not the individual bars, with a variable width. To give an example, I would like all bars in the first group to have the default size of 1, all bars in the second group 2, in the third 3, etc. If I use width=c(1,2,3,..), it applies these settings to individual bars, e.g. the first bar in the first group has size 1, the second bar size 2, etc. which is not what I want. Is there are way to accomplish this? Sorry if this has been discussed before, I searched on the web and the archive of this list but could not find anything. Regards, Ole Schulz-Trieglaff --- Illumina Cambridge Ltd. UK Computational Biology Group United Kingdom