rdataframeweighting

How can I weight a column with a number, R?

I have a column with anomaly values and I want to weight it with a specific number representing the number of years (32).

How can I do this? 

data(mtcars)
mtcars$weight<-apply(mtcars[5], 1, ??, 32)
Solution 
  • mtcars$weighted <- mtcars$drat * 32

    Or if your weights are different for each observation

    mtcars$weighted <- mtcars$drat * mtcars$cyl

    No need for apply, multiplication is already vectorized for your convenience ;)