outer() function with max()

Hello all,

I am trying to use the function outer() together with max() to find the maximum between every pair of values in matrix form.

I will use a simple example:

x = 1:4
y = 1:4

outer(x, y, FUN="max")

However, what I get is an error.

Is there any way in which I can do this operation in R?

Thanks in advance for any help!

apply() is a good way to run a function on either every row or every column of a matrix.
expand.grid is a way of making all possible combinations between two vectors

(mymat <- expand.grid(1:4,
                      1:4) %>% as.matrix)

mynewmat <- cbind(mymat,
                        MARGIN = 1,
                        FUN = max))
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