Hi
probably not the best solution but
if(tail(is.na(x), n=1)) x[1 : (length(x) -
(tail(rle(is.na(x))$lengths, n=1)))] else x
shall do what you want.
HTH
Petr
On 2 Mar 2006 at 9:29, Robert Lundqvist wrote:
Date sent: Thu, 2 Mar 2006 09:29:49 +0100 (MET)
From: Robert Lundqvist <[EMAIL PROTECTED]>
To: R-help@stat.math.ethz.ch
Subject: [R] Skip last NA's?
Send reply to: [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
<mailto:[EMAIL PROTECTED]>
> I wonder if anyone could help me find an expression for skipping the
> last missing values in a vector? The kind of material I have is
> something like
>
> x<-c(23,12,NA,23,24,21,NA,NA,NA)
>
> I would like to skip the last NA's, but not the ones in between other
> vallues. Any hints? (Why not do this by simply take x[1:6]? I have
> several vectors a couple of thousand observations long with varying
> numbers of NA's in the end. I'd prefer not to search through all of
> these one at a time.)
>
> Robert
>
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Petr Pikal
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