[R] Length of vector without NA's

[Dimitris Rizopoulos]

try this

sum(!is.na(x))


I hope it helps.

Best,
Dimitris


On 9/23/2010 5:08 PM, Ralf B wrote:
> Hi,
>
> this following code:
>
> x<-c(1,2,NA)
> length(x)
>
> returns 3, correctly counting numbers as well as NA's. How can I
> exclude NA's from this count?
>
> Ralf
>
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-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

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