[R] apply fun to df returning a matrix

Soeren.Vogel at eawag.ch Soeren.Vogel at eawag.ch
Fri Apr 30 12:49:02 CEST 2010

Hello, a data.frame, df, holds the numerics, x, y, and z. A function,  
fun, should return some arbitrary statistics about the arguments, e.g.  
the sum or anything else. What I want to do is to apply this function  
to every pair of variables in df, and the return should be a matrix as  
found with cov. How can I achieve that? Thanks, Sören

df <- data.frame(x=1:10, y=11:20, z=21:30);
fun <- function(x){
# and now???

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