Hi Alejandra- First, can you check the versions you are using by sending the output of sessionInfo()? The color bars were added to DiffBind at some point and are not present in all versions. You need version 1.4.0 or later, which corresponds to Bioconductor 2.11 (R 2.15). Next, check the help page for dba.plotHeatmap: > ?dba.plotHeatmap All of the heatmaps drawn in the Examples code have category color bars, if you have a reasonably current version. Cheers- Rory From: Alejandra Eugenia Medina Rivera <medina.alexiel@gmail.com<mailto:medina.alexiel@gmail.com>> Date: Wed, 1 May 2013 16:43:40 -0400 To: Rory Stark <rory.stark@cruk.cam.ac.uk<mailto:rory.stark@cruk.cam.ac.uk>> Subject: Diff Bind consultation Dear Rory I'm currently trying to draw a heatmap with your library using DNase data. I can actually draw the heatmap but I cannot add the cathegories bar you show in the DiffBind documentation example with the tamoxifen data. In fact I tried to draw the tamoxifen data heatmap using all the examples from the documentation and I get it but without the upper category colour bar, which is what I want. Is there an option for this? Thanks Alejandra Medina -- Alejandra Eugenia Medina Rivera. SickKids [[alternative HTML version deleted]]