Dear all, I am sure it won't be difficult for you!! I need to calculate the average among variables for the single units of my dataset. But, while doing it, I need to do not consider some values. To better explain, think like there are two units and three variables:
V1 V2 V3 [1] 3 -2 4 [2] -1 4 1 and you want to calculate the average by row, without considering those negative values: => mean(1row) = (3+4)/2 => mean(2row) = (4+1)/2 Could anyone please give me the commands to do that in R? Thank you so much [[alternative HTML version deleted]] ______________________________________________ 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.