Hi! First, pardon me if this is a faq. I think I should be using some sort of apply, but I am not managing to figure those out.
I have a data frame similar to this: > d <- data.frame(x = LETTERS[1:5], y = rnorm(5), z = rnorm(5)) > d x y z 1 A 0.1605464 -0.2719820 2 B -0.9258660 1.2623117 3 C -0.3602656 1.5470351 4 D 1.2621797 1.2996500 5 E 0.6021728 0.5027095 > >From this I want to get a new data frame which contains the z scores based on the values found in each row. For instance for element [C,y], I would like to calculate (-0.3602656 - mean(column y)/stddev(column y)). Thanks! -- Karin Lagesen, Ph.D. karin.lage...@medisin.uio.no http://folk.uio.no/karinlag ______________________________________________ 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.
