I agree with Vincent. I have seen code from Herve in a package with some standardization of chromosome names, and this code could perhaps be used more widely so we don't have all the problems with chr1 vs chr01 vs 1.
However, in this particular case, if Ulrich is actually interested in the mitochondrial genome, he has a problem. hg19, which is the genome version from UCSC is consider equal to NCBIs b37. However, as far as I understand, UCSC screwed up with the mitochondrial genome and used an old version for their hg19. So the error message is in many ways right here: the two genomes are slightly different because they have different mitochondrial genomes. Kasper [[alternative HTML version deleted]] _______________________________________________ Bioc-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/bioc-devel