On Wed, Feb 25, 2009 at 10:01 PM, Juliet Hannah <juliet.han...@gmail.com> wrote:
> Out of curiosity, what would be a good way to do this without using
> the reshape package? Thanks!
Well the core of the melt code is this:
ids <- data[, var$id, drop = FALSE]
df <- do.call("rbind", lapply(var$measure, function(x) {
data.frame(ids, x, data[, x])
}))
names(df) <- c(names(ids), variable_name, "value")
Hadley
--
http://had.co.nz/
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