[R] na.rm in sd()

[Uwe Ligges]

Heberto Ghezzo wrote:
> Hello, I think this qualify as a bug
>  > x<-c(1,2,3,4,NA,6,7)
>  > mean(x)
> [1] NA
>  > mean(x,na.rm=T)
> [1] 3.833333
>  > sd(x)
> Error in var(as.vector(x)) : missing observations in cov/cor
>  > sd(x,na.rm=T)
> Error in sd(x, na.rm = T) : unused argument(s) (na.rm ...)
>  > var(x)
> Error in var(x) : missing observations in cov/cor
>  > var(x,na.rm=T)
> [1] 5.366667
>  >
> why sd() does not recognize the na.rm=T parameter, while var does?


> R 1.6.1 on Win98

It works with R-1.6.2 (!) which is recent.
There was a bug fix regarding NAs and sd() in R-1.6.1, so I guess your 
version is older than the official release of R-1.6.1.

Uwe Ligges


> R.Heberto Ghezzo Ph.D.
> Meakins-Christie Labs
> McGill University
> Montreal - Canada
> 
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