jarry <jarryjarry58 <at> hotmail.com> writes: > > > Hi, > > I am reading an article in which, first, some given "p-results" are > obtained, and, second, these are afterwards transformed and expressed as the > "NEGATIVE base-10 logarithm of the p-value". > > My question is if anyone could indicate how is such transformation achieved > with R and how are they expressed exponentially, as in for example 1.8E-18. >
?? presumably -log10(pvalue) ?? so a p-value of 1.8e-18 (i.e., 1.8 times 10^-18) would correspond to a value of 17.74 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
