R help - Mar 2004 - how to replace NaN in a vector

Hi, all

a vector such as

(1,2,4,-1,NaN,2,4,NaN)

if try to replace all the NaN with a numerical value, what's the easiest 
way?
thanks a lot



best
yong

On Mon, 8 Mar 2004 18:18:28 -0600 (CST), you wrote:
>Hi, all
>
>a vector such as
>
>(1,2,4,-1,NaN,2,4,NaN)
>
>if try to replace all the NaN with a numerical value, what's the easiest
>way?
x[is.nan(x)] <- 42

See ?NaN for related functions.

Duncan Murdoch

On Mon, 8 Mar 2004, Yong Wang wrote:
> Hi, all
> 
> a vector such as
> 
> (1,2,4,-1,NaN,2,4,NaN)
> 
> if try to replace all the NaN with a numerical value, what's the
easiest
> way?
> thanks a lot
> 
> 
Is this what you wanted?
> x<-c(1,2,4,-1,NaN,2,4,NaN)
> y<-ifelse(is.nan(x),-999,x)
> y
[1]    1    2    4   -1 -999    2    4 -999



David Scott


_________________________________________________________________
David Scott	Department of Statistics, Tamaki Campus
		The University of Auckland, PB 92019
		Auckland	NEW ZEALAND
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Email:	d.scott at auckland.ac.nz 


Graduate Officer, Department of Statistics