[R] Fastest way of finding if any members of vector x fall in the range of the rows of matrix y

[Dimitris Rizopoulos]

One approach is the following:

x <- rnorm(5)
y <- matrix(rnorm(5*2), 5, 2)

check <- y - x
check[, 1] * check[, 2] < 0


I hope it helps.

Best,
Dimitris


On 6/24/2011 10:57 AM, Salih Tuna wrote:
> Hi All,
> What is the fastest way of finding if any members of vector x fall in the
> range of the rows of matrix y?
> I do not want to use two for loops as this will take forever.
> Any help will be appreciated,
> best,
> salih
>
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-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

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