The problem is that if x is either NA or NaN then x != 0 is NA (and not FALSE
or TRUE) and the function is.nan tests for a NaN but not for NA, i.e.
is.nan(NA) returns FALSE.
You can do something like:
mat_zeroless[!is.na(mat) & mat != 0] <- mat[!is.na(mat) & mat != 0]
--- On Thu, 14/8/08, rco
> -Original Message-
> From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
> On Behalf Of rcoder
> Sent: Wednesday, August 13, 2008 3:17 PM
> To: r-help@r-project.org
> Subject: [R] missing TRUE/FALSE error in conditional construct
>
>
> Hi everyone,
>
> I posted something similar to thi
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