Hello Alexander, The correlation coefficient is calculated as described in the Methods section that displays when you click on "create" beside the "correlation" function in the Table Browser.
In response to your questions one of our developers also had these comments: Correlations will not take place in bases if one of the values is missing for that base. Only bases that have values in both data sets are correlated. Not all wiggle data tracks have values everywhere. Any time a value is missing, it is not graphed and takes no part in any statistical calculations. Hopefully this information was helpful and answers your question. If you have further questions or require clarification feel free to contact the mailing list at [email protected]. Regards, Pauline Fujita UCSC Genome Bioinformatics Group http://genome.ucsc.edu On 08/24/11 07:18, Alexander Belostotsky wrote: > Dear member of UCSC Browser Team, > > I have question about calculation of linear correlation coefficient in Table > Browser. > Is this coefficient calculated with respect of positions? So, in other > words, can any person trust this calculations when he/she has a list > with *different, > but overlapping positions *in genome with corresponding values for each > position. Let us consider this position for just one chromosome. > The second question: am I right that UCSC Browser consider not displayed > position in one track as 0-value signal? Many positions in track, supposed > to be continuous, are still absent. > > Thank you!!! > Best wishes, > Alexander > _______________________________________________ > Genome maillist - [email protected] > https://lists.soe.ucsc.edu/mailman/listinfo/genome _______________________________________________ Genome maillist - [email protected] https://lists.soe.ucsc.edu/mailman/listinfo/genome
