1 | bicov(x, y)
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x |
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y |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | ##---- 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)
{
mx <- median(x)
my <- median(y)
ux <- abs((x - mx)/(9 * qnorm(0.75) * mad(x)))
uy <- abs((y - my)/(9 * qnorm(0.75) * mad(y)))
aval <- ifelse(ux <= 1, 1, 0)
bval <- ifelse(uy <= 1, 1, 0)
top <- sum(aval * (x - mx) * (1 - ux^2)^2 * bval * (y - my) *
(1 - uy^2)^2)
top <- length(x) * top
botx <- sum(aval * (1 - ux^2) * (1 - 5 * ux^2))
boty <- sum(bval * (1 - uy^2) * (1 - 5 * uy^2))
bi <- top/(botx * boty)
bi
}
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