Dear All Please forgive the advert, but I would just like to leave a quick note about an R package I have written for visualising quantitative data, such as microarray data, on bacterial genomes: http://www.biomedcentral.com/1471-2105/6/98 This package should easily integrate with any bioconductor package which can hold quantitative data in a data frame (which includes most packages that I have come across) Many thanks and I hope someone may find it useful Mick