Check out the tapply function. ?tapply Julian
Bernd Jagla wrote: > Hi, > I am new to R and couldn't find any information on how to handle my table > data that I just read in the way I want to use it.. > > I read in a table from a file: > x <- read.delim("filenam", header=TRUE) > > one column (x$label) hold the class labels. Another holds some values > (x$val). > I want to calculate summary statistics for different classes. > > How would I do this? > > Thanks, > > Bernd > > ______________________________________________ > 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. ______________________________________________ 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.