Is there an easy way to do a stratified random sampling based on a factor column in R? E.g. I want to extract a random 10% of the data from dataset for each class (so each class may have a different number of entries, depending on its size). On a related note, if this is easily doable, is there an easy way to extract TWO non-overlapping strat. random samples datasets (e.g. If I want to have a training and test dataset). Thanks!
--j -- Jonathan Greenberg Graduate Group in Ecology, U.C. Davis http://www.cstars.ucdavis.edu/~jongreen http://www.cstars.ucdavis.edu AIM: jgrn307 or jgrn3007 MSN: [EMAIL PROTECTED] or [EMAIL PROTECTED] ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
