I am using cummeRbund for cuffdiff data presentation. I have time series data, with three multiple groups, i.e. treatment-1, treatment-2 and treatment-3. While generating cuffdiff results, I had forgotten to keep these group names uniform, say T1, T2 and T3 insteat I kept T1, T-2 and T-3. My question is, how could I change these group names with cummeRbund while generating graphs, such as box plot, dendrogram, histogram, volcano plot, etc. It would be of great help if someone guides me in this aspect.