[R] the ifelse function

[Chuck Cleland]

Jennifer Dillon wrote:
> Hi Everyone,
> 
> I think I found a problem with the ifelse function:  If the condition
> argument is NA, it treats it as true.  Anyone agree or disagree with this?

  I disagree.

> ifelse(c(5,4,NA) == 5, 1, 0)
[1]  1  0 NA

> Jen

-- 
Chuck Cleland, Ph.D.
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