[R] as.integer question

From: Erin Hodgess <erinm.hodgess_at_gmail.com>
Date: Thu, 17 Jan 2008 11:35:34 -0600


Hi R People:

I'm reading "Statistical Computing with R", by Maria Rizzo, and it's really good.

Anyhow, I have a question about something in there.

> u <- runif(5)
> u

[1] 0.1177041 0.4271790 0.4601597 0.2204846 0.4051473
> #in the book
> sum(as.integer(u > 0.4))

[1] 3
> #what I would do
> sum(u > 0.4)
[1] 3
>

Is one way better than the other, please?

Thanks,
Erin

-- 
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodgess_at_gmail.com

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