You can do it by subsetting or indexing
r<-c(0,0,0,rnorm(10,10,5))> mean(r)
[1] 8.052215> mean(r[r!=0])
[1] 10.46788
Weidong Gu
On Tue, Jul 19, 2011 at 4:36 PM, Dimitri Liakhovitski
<dimitri.liakhovitski at gmail.com> wrote:> Sorry if it's been discussed before - don't seem to find it.
> I'd like to calculate a mean while ignoring zeros.
> "mean" doesn't seem to have an option for that.
> Any other function/package that could do it?
>
> Thanks for a pointer!
>
> --
> Dimitri Liakhovitski
> marketfusionanalytics.com
>
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