Skip to main content

Browse the archive

https://github.com/cran/pracma
21 November 2023, 19:34:12 UTC
Revision b5e4bf28fcba9f5eaffbeecfb0bc307452d074ee authored by Hans W. Borchers on 01 November 2014, 00:00:00 UTC, committed by Gabor Csardi on 01 November 2014, 00:00:00 UTC 
version 1.7.7
1 parent d57c14d
Raw File
Tip revision: b5e4bf28fcba9f5eaffbeecfb0bc307452d074ee authored by Hans W. Borchers on 01 November 2014, 00:00:00 UTC
version 1.7.7
Tip revision: b5e4bf2
std.R 
##
##  s t d . R
##


std <- function(x, flag=0) {
    if (length(x) == 0) return(c())
    if (!is.numeric(x))
        stop("Argument 'x' must be a numeric vector or matrix.")

    n <- if (flag == 0) length(x) - 1 else length(x)
    sqrt(sum((x-mean(x))*(x-mean(x)))/n)
}


std_err <- function(x) {
    if (length(x) == 0) return(c())
    if (!is.numeric(x))
        stop("Argument 'x' must be a numeric vector or matrix.")

    sqrt(var(x)/length(x))
}
back to top