Content - c206bd428973fa47a752ee14f135ab92ce55d73c - b817a18/R/std.R

swh:1:snp:81eadaa089e8253d8469bcef66aa332632c6c669

Tip revision: 63f12837f2d7d6d30cdc2b2df60efdef228d8d0f authored by HwB on 10 May 2011, 00:00:00 UTC
version 0.4-0

Tip revision: 63f1283

std.R

##
##  s t d . R
##


# std(a, flag=0, dim=2)  # dim = 1: along cols; = 2: along rows
std <- function(x, flag=0) {
	n <- if (flag == 0) length(x) - 1 else length(x) 
	sqrt(sum((x-mean(x))*(x-mean(x)))/n)
}