[R-sig-eco] Problem with Capscale and Phylobetadiversity distance matrix

2015-03-18 Thread Alexandre F. Souza
. Alexandre F. Souza Professor Ajunto II Universidade Federal do Rio Grande do Norte CB, Departamento de Ecologia Campus Universitário - Lagoa Nova 59072-970 - Natal, RN - Brasil lattes: lattes.cnpq.br/7844758818522706 http://www.docente.ufrn.br/alexsouza -- Dr. Alexandre F. Souza Professor Ajunto II

[R-sig-eco] Understanding of P-values from rankings

2015-04-08 Thread Alexandre F. Souza
-08 14:50 GMT-03:00 Alexandre F. Souza alexsouza.cb.ufrn...@gmail.com: Dear friends, I have fun a series of null models of tree species traits (e.g., height) in permanent forest plots using the code found in Kraft's web page ( http://life.umd.edu/biology/kraftlab/Code_files/trait_tests.R

Re: [R-sig-eco] Problem in Search and Association Loop

2015-09-05 Thread Alexandre F. Souza
Bowdichia virgilioidesNA 15 > 11 Ocotea glomerataNA 16 > 12 SclerolobiumdensiflorumNA 15 > > > Fabrice > > --- > Fabrice Dessaint > > UMR 1347 Agroécologie >

[R-sig-eco] Problem in Search and Association Loop

2015-09-04 Thread Alexandre F. Souza
[i,3] == new.data[j,2])){ output[i,1] = base[i,2] output[i,2] = base[i,3] output[i,3] = new.data[j,2] } } } This is just the beginning of the code I plan. I stopped due to the error message. Thank you very much in advance, Alexandre -- Dr. Alexandre F. Souza Professor

[R-sig-eco] Summary of the Answers I got for my post "How to incorporate spatial autocorrelation in multivariate GLM "

2015-09-12 Thread Alexandre F. Souza
pp. 1202–1212. * -- Dr. Alexandre F. Souza Professor Adjunto III Universidade Federal do Rio Grande do Norte CB, Departamento de Ecologia Campus Universitário - Lagoa Nova 59072-970 - Natal, RN - Brasil lattes: lattes.cnpq.br/7844758818522706 http://www.docente.ufrn.br/alexsouza

[R-sig-eco] How to fit a logistic discrete function!

2016-01-09 Thread Alexandre F. Souza
xample of how fitting it. Does anyone have any suggestions? Thank your very much in advance, Alexandre -- Dr. Alexandre F. Souza Professor Adjunto III Universidade Federal do Rio Grande do Norte CB, Departamento de Ecologia Campus Universitário - Lagoa Nova 59072-970 - Natal, RN - Brasil

[R-sig-eco] Number of Groups in SpeciesMix

2016-01-11 Thread Alexandre F. Souza
o apply obs~1+x but it returns an error message, however. I am kind of blocked here so any thoughts could help... Sincerely, Alexandre -- Dr. Alexandre F. Souza Professor Adjunto III Universidade Federal do Rio Grande do Norte CB, Departamento de Ecologia Campus Universitário - Lagoa Nova 5907

[R-sig-eco] Error in optim function

2016-01-19 Thread Alexandre F. Souza
, LVmse) # give optim initial guess and function parms = optimOut$par # extract parameters nSim = as.data.frame(lsoda(n0,times,logInt,parms)) # run ode to get simulated population Any assistence would help. Many thanks in advance, Alexandre -- Dr. Alexandre F. Souza Professor Adjunto III

[R-sig-eco] Deviance in Multinomial Logistic Regression

2017-06-01 Thread Alexandre F. Souza
+ MEM15 + MEM10 + MEM26 + MEM16 0.6943008 663.2007 1458.1197 1.260428e-119 7 subregion ~ AMT + APP + CEC + Sand + TAR + ElevR + ElevCV + HFP + MEM2 + MEM1 + MEM3 + MEM4 + MEM5 + MEM27 + MEM24 + MEM15 + MEM10 + MEM26 + MEM16 0.7016101 673.5208 1675.9823 6.197945e-167 -- Dr. Alexandre F. Souz

[R-sig-eco] Is stepacross a must?

2018-06-23 Thread Alexandre F. Souza
-- Forwarded message -- From: Alexandre F. Souza Date: 2018-06-23 7:04 GMT-03:00 Subject: Is stepacross a must? To: Lista de discussao R-sig-ecology Dear friends, I am in deep doubt regarding whether or not to apply vegan'a stepacross function to my dissimilarity matrix

[R-sig-eco] Simpson distances on abundances?

2018-07-26 Thread Alexandre F. Souza
and Lennon 2001 but could not find it. Thanks in advance for any ideas, Alexandre -- Dr. Alexandre F. Souza Professor Adjunto IV Chefe do Departamento de Ecologia Universidade Federal do Rio Grande do Norte CB, Departamento de Ecologia Campus Universitário - Lagoa Nova 59072-970 - Natal, RN - Brasil

[R-sig-eco] Error in Kriging Procedure

2018-12-14 Thread Alexandre F. Souza
1, locations=coords, model=data.fit) G0y_ok <- interpolate(BAF_raster, gModel_ok, xyOnly=FALSE) Error in as(data, "data.frame") : no method or default for coercing “NULL” to “data.frame” Do anyone has any idea of what may be wrong? I tried to empty the raster

[R-sig-eco] Indicator Species in Presence-Absence Data

2019-11-23 Thread Alexandre F. Souza
are needed. An important information is that the ecoregions were defined through interpolation of beta dissimilarity metrics (simpson index) and k-means classification. Is it possible that they are different but do not have indicator species? Thanks for any thoughts, Sincerely, Alexandre -- Dr. A

[R-sig-eco] How to subsample a community dataset

2019-11-19 Thread Alexandre F. Souza
-diversity compositional analyses. Are you aware of any packages or functions that perform this task? Thank you very much in advance, Sincerely, Alexandre -- Dr. Alexandre F. Souza Professor Associado Chefe do Departamento de Ecologia Universidade Federal do Rio Grande do Norte CB, Departamento de

[R-sig-eco] Do You Have Anything Against Using ISO DATA?

2021-01-20 Thread Alexandre F. Souza
of bioregionalization using ISO DATA, only kmeans. Do you know of any reasons I should not use ISO DATA for this aim? Thank you very much in advance for any inputs, Best, Alexandre -- Dr. Alexandre F. Souza Professor Associado Chefe do Departamento de Ecologia Universidade Federal do Rio Grande do Norte

[R-sig-eco] On The Choice of a Classification Approach

2021-11-01 Thread Alexandre F. Souza
of such classification. Thank you very much in advance for any ideas. Regards, Alexandre -- Dr. Alexandre F. Souza Professor Associado Chefe do Departamento de Ecologia Universidade Federal do Rio Grande do Norte CB, Departamento de Ecologia Campus Universitário - Lagoa Nova 59072-970 - Natal

[R-sig-eco] ErrError: Non-numeric argument to binary operator, despite values being numeric

2024-03-26 Thread Alexandre F. Souza
estions, Alexandre -- Dr. Alexandre F. Souza Professor Associado Chefe do Departamento de Ecologia Universidade Federal do Rio Grande do Norte CB, Departamento de Ecologia Campus Universitário - Lagoa Nova 59072-970 - Natal, RN - Brasil lattes: lattes.cnpq.br/7844758818522706 http://www.esferacien

[R-sig-eco] GLMM: Should Integers be Levels of Dr. Alexandre F. Souza Prof. Associado a Factor?

2024-03-26 Thread Alexandre F. Souza
$ reproducao : int 3 0 0 0 0 0 0 0 0 0 ... $ reproducao_bin : int 1 0 0 0 0 0 0 0 0 0 ... $ R_dens_total: int 31 31 31 31 31 31 31 31 31 31 ... -- Dr. Alexandre F. Souza Professor Associado Chefe do Departamento de Ecologia Universidade Federal do Rio Grand

[R-sig-eco] How to set Manually the Reference Level in glmmTMB

2024-03-28 Thread Alexandre F. Souza
: int 3 0 0 0 0 0 0 0 0 0 ... $ reproducao_bin : int 1 0 0 0 0 0 0 0 0 0 ... $ R_dens_total: int 31 31 31 31 31 31 31 31 31 31 ... > Many thanks! Alexandre -- Dr. Alexandre F. Souza Professor Associado Departamento de Ecologia/CB Universidade Federal do Rio Grande d

[R-sig-eco] GLMM: AIC worsens but BIC improves

2024-03-28 Thread Alexandre F. Souza
m,modelo10.glmm) df BIC modelo8.glmm 8 1707.613 modelo9.glmm 7 1706.011 modelo10.glmm 5 1697.479 Perhaps report bot AIC and BIC and decide for the simpler model?... Thank you very much for any inputs, Cheers, Alexandre -- Dr. Alexandre F. Souza Professor Associado