Hi,

?p.adjust

Christoph

2011/10/12 Cristina Ramalho <cristina.rama...@grs.uwa.edu.au>

> Hi all,
>
> This is probably a very simple question but I cannot figure out how to do
> it. I run the fourthcorner method with my data and would like to adjust the
> p values for multiple comparisons using Holm correction. When I run the
> fourthcorner I obtain the results in yellow. What do I need to do to be
> able
> to aply the Holm correction to those p values?
>
> > library(ade4)
> > four1 <- fourthcorner(tabR, tabL, tabQ, modeltype = 1, nrepet = 999, tr01
> = FALSE)
> > summary(four1)
> Fourth-corner Statistics
> Permutation method  1  ( 999  permutations)
> ---
>
>  Var. R   Var.     Q    Stat. Value        Prob.
> RABINT / SPAN   r     -0.0478943   0.038 *
> RABINT / TREE    r     0                   1.000
> RABINT / SHRU   r     0                   1.000
> RABINT / HERB   r     0.0261879    0.340
> RABINT / SEDG   r     -0.0320345   0.316
> RABINT / GRAS  r     0.0124263    0.399
>
> Thank you in advance for your help,
>
> Regards,
>
> C.
>
> --
> Cristina E. Ramalho
> PhD Candidate
> MSc in GIS
>
> Ecosystem Restoration & Intervention Ecology Research Group
> School of Plant Biology (M090)
> The University of Western Australia
> 35 Stirling Highway, Crawley WA 6009 Perth, Australia
> Phone: +61 (08) 6488 4655; Fax: +61 (08) 6488 7461
> www.plants.uwa.edu.au/research/ecosystem_restoration
>
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