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Revision e970b8e92676e0d1f2c84b116f0bad93b03b89c6 authored by Hans W. Borchers on 15 December 2019, 21:30:02 UTC, committed by cran-robot on 15 December 2019, 21:30:02 UTC 
version 2.2.9
1 parent 26e049d
Raw File
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))
}
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