[R] Mean(s) from values in different row?

[Petr PIKAL]

Hi

> 
> Hello:
> 
> Is there a way to get a mean from values stored in different rows? 
> 
> The data looks like this:
>   YEAR-1, JAN, FEB, ..., DEC
>   YEAR-2, JAN, FEB, ..., DEC
>   YEAR-3, JAN, FEB, ..., DEC
> 
> What I want is the mean(s) for just the consecutive winter months:
>   YEAR-1.DEC, YEAR-2.JAN, YEAR-2.FEB
>   YEAR-2.DEC, YEAR-3.JAN, YEAR-3.FEB
>   etc.

Isn't colMean(yourdata) what you want?

Regards
Petr

> 
> Thanks.
> 
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