Hi,
result <- lapply(unique(dataset$ID), function(uid) dataset[dataset$ID == uid, ])
Ok, I have the element result as a list
names(result) <- unique(dataset$ID)
Nothing happens. I don't have any submatrix... Matteo ______________________________________________ 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.
