Package vegan is your friend. See vegdist function (among others).

Cheers,
Roman




On Fri, Dec 10, 2010 at 1:28 PM, Yong Zhang <2010202035@njau.edu.cn> wrote:

>
> Hello all,
>
> If I have 15 sites with the species composition data, how should I get the
> dissimilarity matrix of those sites? Which function or package should I use?
> I am green,
>
> sorry for any inconvenience that I brought to you.
>
> Any of your hint or suggestion will be greatly appreciated.
>
> All the best.
>
>
> 2010-12-10
>
>
>
> Yong Zhang, ph.D.
> Lab of aquatic insect & stream ecology
> Dept.of Entonology, Nanjing Agricultural University
> Nanjing, China 210095
> Cell: (+86) 025-84395241
> email:2010202035@njau.edu.cn <email%3A2010202035@njau.edu.cn>
>
> _______________________________________________
> R-sig-ecology mailing list
> R-sig-ecology@r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
>
>


-- 
In God we trust, all others bring data.

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