Nothing
distancia <-
function (x, y)
{#Find out the row in y that is closer to x using eucldean distance
if (class(y) == "matrix") {
distancia = drop(sqrt(colSums((x - t(y))^2)))
distancia = t(distancia)
}
else distancia = sqrt(sum((x - y)^2))
distancia
}
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