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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | ##---- Should be DIRECTLY executable !! ----
##-- ==> Define data, use random,
##-- or do help(data=index) for the standard data sets.
## The function is currently defined as
function (x, y = NA, q = 0.5)
{
x <- as.matrix(x)
if (is.na(y[1]))
y <- x[, 2]
x <- x[, 1]
n <- length(x)
m <- floor(q * n + 0.5)
yord <- sort(y)
flag <- (y <= yord[m])
xord <- sort(x)
xq <- xord[m]
yord <- sort(y)
yq <- yord[m]
flag1 <- (x <= xq)
flag2 <- (y <= yq)
A <- mean(flag1 * flag2)
flag1 <- (x <= xq)
flag2 <- (y > yq)
B <- mean(flag1 * flag2)
flag1 <- (x > xq)
flag2 <- (y <= yq)
C1 <- mean(flag1 * flag2)
flag1 <- (x > xq)
flag2 <- (y > yq)
D1 <- mean(flag1 * flag2)
fx <- akerd(x, pts = xq, plotit = FALSE, pyhat = T)
fy <- akerd(y, pts = yq, plotit = FALSE, pyhat = T)
v1 <- (q - 1)^2 * A
v2 <- (q - 1) * q * B
v3 <- (q - 1) * q * C1
v4 <- q * q * D1
temp <- 0 - 2 * (v1 + v2 + v3 + v4)/(fx * fy) + q * (1 -
q)/fx^2 + q * (1 - q)/fy^2
val <- sqrt(temp/n)
val
}
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