walsh {Rfit} | R Documentation |
Given a list of n numbers, the Walsh averages are the n(n+1)/2 pairwise averages.
walsh(x)
x |
A numeric vector |
The Walsh averages.
John Kloke kloke@biostat.wisc.edu
Hettmansperger, T.P. and McKean J.W. (2011), Robust Nonparametric Statistical Methods, 2nd ed., New York: Chapman-Hall.
Hollander, M. and Wolfe, D.A. (1999), Nonparametric Statistical Methods, New York: Wiley.
median(walsh(rnorm(100))) # Hodges-Lehmann estimate of location ## The function is currently defined as function (x) { n <- length(x) w <- vector(n * (n + 1)/2, mode = "numeric") ind <- 0 for (i in 1:n) { for (j in i:n) { ind <- ind + 1 w[ind] <- 0.5 * (x[i] + x[j]) } } return(w) }