[R] Make a matrix from two lists

[John Sorkin]

I am trying to write a function that makes a matrix out of two lists. As you will see run running the function below, the result is NOT a matrix but rather a list. Can anyone tell me what I am doing wrong?
Thanks,
John
 
test <- function(one,two) {
  cat("List One=",one,"\n")
  cat("List Two=",two,"\n")
  cat("Should be a matrix, but is not",matrix(cbind(one,two)),"\n")
 }
x <- c(1,2,3)
y <- c(11,22,33)
test(x,y)
 
 
John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
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GRECC (BT/18/GR)
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