does the following example, what you want?
Thomas P.
## some test data x <- data.frame(matrix(rnorm(72*10, mean=50, sd=20), ncol=10))
me <- colMeans(x) sd <- apply(x, 2, sd)
coff <- me + 2*sd
# see ?t and ?pmax x2 <- t(pmin(t(x),coff))
# test it x-x2
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