Re: [R-sig-eco] Help obtaining f values

2014-09-15 Thread Ricardo Solar
Well, I may have gotten your question over-simplified, but, isn't it the F in your table (*in bold*)? Df Deviance Resid. Df Resid. Dev*F*Pr(F) NULL 26 3204.6 Sex 2 6.8924 3197.7 *2.2640* 0.1851036 Time1

Re: [R-sig-eco] extract distance from betadisp {vegan}

2013-04-22 Thread Ricardo Solar
Hi Mitchell; If I understood what you want, it should work: beta - betadisper(vegdist(matrix), type=centroid) beta$distances This will give you the raw values and then you can move with your analyses. But check the new paper by Baselga 2013 Ecography before using dissimilarity. He has

[R-sig-eco] Question on adipart randomisation procedure

2013-02-26 Thread Ricardo Solar
Hi mates; I was wondering here if it's possible to apply the Sample-based, or the H2 randomisation proposed in Crist et al. 2003 using adipart or any similar function. As they describe there, by randomising samples we'd be able to account for sampling design randomness, instead of individuals

Re: [R-sig-eco] lme4 for pseudoreplication avoidance

2013-02-25 Thread Ricardo Solar
Hi Lara; You're dealing with mixed models in this case, I suggest you to take a look on this wesite: http://glmm.wikidot.com Also, there's a specific mailing list for this, there your questions were either probably already answered or can be properly answered. With my best, Ricardo.

[R-sig-eco] An unanswered question about adonis and pcnm

2012-11-08 Thread Ricardo Solar
Hello all; A couple of years ago, our colleague in this group Kevin McCluney asked what is for me a quite important question, though I couldn't find an answer to this. If someone can shed some light on this, I'd be really grateful: The question is: *Is it innapropriate to use the significant

Re: [R-sig-eco] Contrasts for glm models

2012-02-24 Thread Ricardo Solar
Hi; If I understood, you can create a copy of the variable and rename levels, jointing them and building a model with the levels merged. Then you compare the models and find if the models are or are not different (p0.05), if they are ... your levels are different. I also know that Ronaldo Reis

[R-sig-eco] Nestedness analyses in Vegan

2011-11-28 Thread Ricardo Solar
Hi people; I'm thinking about a solution to show that a sample coming from 3 types of killing solutions are nested. However, when I tried to do this with nestedness function in Vegan I couldn't specify the groups. I guess it's impossible at all, so my question is: is there any other analysis