Yes I know why we always round to the nearest even number if we are in the exact middle (i.e. 2.5 becomes 2) of two numbers. But when I want to evaluate data for some peopl
This appears to work:
rnd <- function(x) trunc(x+sign(x)*0.5)
Ananda Mahto's response seems to do this and more - I am not sure what the extra code in his response is accounting for; or, in other words, I can't figure out how to break the rnd() function defined above.
Example:
seq(-2, 2, by=0.5)
# [1] -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0
round(x)
# [1] -2 -2 -1 0 0 0 1 2 2
rnd(x)
# [1] -2 -2 -1 -1 0 1 1 2 2