R/global.AveDiff.R

In safe: Significance Analysis of Function and Expression

global.AveDiff <-
function (C.mat, u, args.global)
{
    m <- length(u)
    size <- (rep(1, m) %*% C.mat)[1, ]
    if (!args.global$one.sided) {
        return(function(u, C.mat2 = C.mat, sizeB = size, mB = m) {
            m1 <- (t(C.mat2) %*% abs(u))/sizeB
            m2 <- (sum(abs(u)) - m1 * sizeB)/(mB - sizeB)
            s1 <- (t(C.mat2) %*% abs(u)^2) - m1^2 * sizeB
            s2 <- (sum(abs(u)^2) - s1 - m1^2 * sizeB) - m2^2 *
                (mB - sizeB)
            diff <- (m1 - m2)/sqrt(s1/sizeB/(sizeB - 1) + s2/(mB -
                sizeB)/(mB - sizeB - 1))
            return(as.numeric(diff))
        })
    }
    else return(function(u, C.mat2 = C.mat, sizeB = size, mB = m) {
        m1 <- (t(C.mat2) %*% u)/sizeB
        m2 <- (sum(u) - m1 * sizeB)/(mB - sizeB)
        s1 <- (t(C.mat2) %*% u^2) - m1^2 * sizeB
        s2 <- (sum(u^2) - s1 - m1^2 * sizeB) - m2^2 * (mB - sizeB)
        diff <- (m1 - m2)/sqrt(s1/sizeB/(sizeB - 1) + s2/(mB -
            sizeB)/(mB - sizeB - 1))
        return(as.numeric(diff))
    })
}