Hello Sonja, What you are noticing is related to the compression of the full data set of datapoints when it is included in the browser.
http://genomewiki.ucsc.edu/index.php/Selecting_a_graphing_track_data_format The 2nd paragraph on our instructions explain the situation and recommends the bedGraph alternative: http://genome.ucsc.edu/goldenPath/help/wiggle.html Background information: http://genomewiki.ucsc.edu/index.php/Wiggle Thanks for the feedback, Jennifer ------------------------------------------------ Jennifer Jackson UCSC Genome Bioinformatics Group ----- "Sonja Althammer" <[email protected]> wrote: > From: "Sonja Althammer" <[email protected]> > To: [email protected] > Sent: Thursday, December 3, 2009 3:12:21 AM GMT -08:00 US/Canada Pacific > Subject: [Genome] Bug report > > Hello! > I would like to inform you about a bug I find a lot of times: The > display of > wig-files is not very precise (I think especially with float > numbers). > I have the following example for you: > awk '{if($2>=7316193 && $3 <=7316217)print $0}' > R5_NoSat_4D_SubtrFromBed.wig_chr10 > chr10 7316193 7316201 14.01 > chr10 7316201 7316202 16.54 > chr10 7316202 7316217 15.69 > > Apart from the start-height being 14.01 instead of 13.39, after > position 202 > in the .ps it looks like the height goes down to 13.39 again, while it > stays > at 16 (16.54 and 15.69 should be both 16 when rounded) > > I attach you the visualization as well as my file so you can reproduce > it. > I hope I could contribute in future-improvements. > > Sonja Althammer > > _______________________________________________ > Genome maillist - [email protected] > https://lists.soe.ucsc.edu/mailman/listinfo/genome _______________________________________________ Genome maillist - [email protected] https://lists.soe.ucsc.edu/mailman/listinfo/genome
