multiplying all elements of a vector in R

Question

I want a function to return the product of all the values in a vector, like sum but with multiplication instead of addition. I expected this to exist already, b

Answer 1

If your data is all greater than zero this is a safer solution that will not cause compute overflows:

exp(sum(log(x)))

Answer 2

You want prod:

R> prod(1:3)
[1] 6