Hi Lipika, Our internal database representations of coordinates always have a zero-based start and a one-based end. We add 1 to the start before displaying coordinates in the Genome Browser. Therefore, they appear as one-based start, one-based end in the graphical display. Please see this FAQ for more information: http://genome.ucsc.edu/FAQ/FAQtracks#tracks1.
I hope this information is helpful. Please feel free to contact the mail list again if you require further assistance. Best, Mary ------------------ Mary Goldman UCSC Bioinformatics Group On 9/1/10 2:53 PM, Lipika Ray wrote: > Hi UCSC group, > > If I like to map exact residue number from hg18 chromosome sequence, > counting of residue number should start from 0 or 1? > I am picking up the coordinates from your refFlat file in the database, say > 869445 - 884542 on chr1. Should I start counting from 0 to map on chr1 > sequence in chr1.fa.gz file? > > Please help me to figure this out. > Thanks, > > Lipika > _______________________________________________ > Genome maillist - [email protected] > https://lists.soe.ucsc.edu/mailman/listinfo/genome > _______________________________________________ Genome maillist - [email protected] https://lists.soe.ucsc.edu/mailman/listinfo/genome
