search for: tp4536162p4536162

...lue = 4. So, I'd have the following values for Z: 4, 3, 4. How can I create a function like that? (Sorry, I know it's a dumb question, I began to use R two days ago) Thank you very much, Lacerda -- View this message in context: http://r.789695.n4.nabble.com/Function-simple-question-tp4536162p4536162.html Sent from the R help mailing list archive at Nabble.com.

I have data that looks like this: > df1 group id 1 red A 2 red B 3 red C 4 blue D 5 blue E 6 blue F I want a list of the groups containing vectors with the ids. I am avoiding subset(), as it is only recommended for interactive use. Here's what I have so far: df1 <- data.frame(group=c("red", "red", "red", "blue",