[R] calculating mean excluding zeros

[Weidong Gu]

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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