> Yes, the sort method just calls order. Something isn't quite working out for me. library(GenomicRanges) # 1.4.5 gr <- GRanges("chr1", IRanges(c(1, 10), c(50, 60)), '+') sort(gr) -------------------------------------- Dario Strbenac Research Assistant Cancer Epigenetics Garvan Institute of Medical Research Darlinghurst NSW 2010 Australia