[R-sig-eco] Neighbor sampling is random?

[Kingsford Jones]

On Sun, Jul 5, 2009 at 9:42 AM, Paulo Prado<prado at ib.usp.br> wrote:
>
> Thank very much to all.
>
> Kingsford's comment remind me that a general way to demonstrate this is
> trough a Dirichlet tessellation.


Indeed -- where calculation of statistics would require weighting by
the inverse of the tile areas (inclusion probabilities)....



>
> Best
>
> Paulo
>
>
>
> Paulo Prado wrote:
>>
>> Dear r-eco-list users,
>>
>> This is not an R-question, but a statistical one, but maybe somebody can
>> help.
>>
>> I had read that to set random points over an area and picking the nearest
>> plant is not random sample, but I could not recover this article.
>>
>> Is that correct? Could you provide some basic reference?
>>
>> Thanks a lot
>>
>> Paulo
>>
>> --
>> Paulo Inácio de Knegt López de Prado
>> Depto. de Ecologia - Instituto de Biociências - USP
>> Rua do Matão, travessa 14, nº 321
>> Cid. Universitária, São Paulo - SP
>> CEP 05508-900
>> 11-30917599 (sala)
>> 11-30917600 (Secretaria)
>>
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>>
>>
>
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