Hi, I crafted together few functions and data I had for the analysis of E. coli data on project. This is sort of Affymetrix GeneChip type 'ecoligenome' oriented, but I believe the pack has functions generic enough to deal with other Eukaryots, mostly on the plotting side of things (the 'circle' representation has been around for quite some time among the microbiologits community, see http://genolist.pasteur.fr/Colibri/ , http://www.cbs.dtu.dk/staff/dave/MScourse/GenomeAtlas_intro.html). There is also a little to perform 'sliding window operations' on strings (a la 'cumulative G-C skew' once so hype, see: http://nar.oupjournals.org/cgi/content/abstract/26/10/2286?ijkey=16569 31395e28454c697cd6b629a325792356b35&keytype2=tf_ipsecsha). . The functions are most likely to go into the pack 'geneplotter' as soon as possible and the data are thought to end in a data package (next release I would think. the functions are mostly ok but more data are definitely needed). Having them together to play is the best thing I could figure out get polished before throwing them in. The package is called 'ecolitk' (for ecoli tool kit) and can be found in the CVS page of the bioconductor website. For those who carefully keep away from CVS, I put together a simple download page: http://www.cbs.dtu.dk/laurent/download/ecolitk Feedback is fairly welcome. L. -- -------------------------------------------------------------- currently unspecified location -------------------------------------------------------------- Laurent Gautier CBS, Building 208, DTU PhD. Student DK-2800 Lyngby,Denmark tel: +45 45 25 24 89 http://www.cbs.dtu.dk/laurent