Re: [R] question about split

try this: dat <- data.frame(x = runif(100), fac1 = rep(c("a", "b", "c", "d"), each = 25), fac2 = rep(c("A", "B"), 50)) splits <- c("fac1", "fac2") split(dat, dat[splits]) I hope it helps. Best, Dimitris On 6/17/2011 2:34 PM, carslaw wrote: Dear R-users I seem to be stumped on some

[R] question about split

Dear R-users I seem to be stumped on something simple. I want to split a data frame by factor levels given in one or more columns e.g. given dat <- data.frame(x = runif(100), fac1 = rep(c("a", "b", "c", "d"), each = 25), fac2 = rep(c("A", "B"), 50)) I know