In R, I have two vectors:
a <- c(1, 2, 3, 4)
b <- c(NA, 6, 7, 8)
How do I find the element-wise mean of the two vectors, removing NA, without a loop? i.e. I want to get the vector of
(1, 4, 5, 6)
I know the function mean()
, I know the argument na.rm = 1
. But I don't know how to put things together. To be sure, in reality I have thousands of vectors with NA appearing at various places, so any dimension-dependent solution wouldn't work. Thanks.