Displaying 1 result from an estimated 1 matches for "301522".
Did you mean:
30152
2006 Dec 08
2
Aggregate?
Hi All,
I think i'm failing to undersatnd how aggregate() is supposed to work.
example:
test1<-sample(c(0,1),100,replace=T)
test2<-sample(letters,100,replace=T)
aggregate(test1,list(test2),sum)
Error in data.frame(w, lapply(y, unlist, use.names = FALSE)) :
arguments imply differing number of rows: 26, 0
I thought this would give me a list containing the number of ones that