Stratified random sampling in R?
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: jgrn307 at msn.com or jgrn3007 at msn.com