function in tapply

["Manoel Pacheco" <mpacheco@glec.com>]

Simon,
    The bad news is that your solution did not work:

a <- c(1,2); b <- c(3,4)

xy<-list(X=a, Y=b)
fun<-function(x){

X<-x$X
Y<-y$Y
outer(X, Y, "/")
}

result<-tapply (X=xy, FUN=fun)

Error Message:
Problem in tapply(X = xy, FUN = fun): argument "INDICES" is missing with no
default

The good news is that I was able to solve my problem without using tapply.

Thanks!  I sincerely appreciate your support.

    Manolo

PS I tried many variations on your code before sending this message