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...uate argument for cbind: cbind(afunction(ncomma)) Is there in R a function that can do the job ? If not, how can I do it ?? Thanks in advance, Sincerely. St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web...

...o not know how to "mix" the values in aa to obtain the desired values. Is there a way to do it without for loop ? Thanks in advances, sincerely St??phane DRAY -------------------------------------------------------------------------------------------------- D??partement des Sciences Biologiques Universit?? de Montr??al, C.P. 6128, succursale centre-ville Montr??al, Qu??bec H3C 3J7, Canada Tel : (514) 343-6111 poste 1233 Fax : (514) 343-2293 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- W...

...are real ? And what is the conditions to ensure that eigenvectors are real in the case of an asymmetric matrix (if some conditions exist)? Thanks in Advance, St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web...

...solve the problem, or a reference on this kind of question or the email of another list where I should ask this question. Thanks in advance, Sincerely. St??phane DRAY -------------------------------------------------------------------------------------------------- D??partement des Sciences Biologiques Universit?? de Montr??al, C.P. 6128, succursale centre-ville Montr??al, Qu??bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web...

Hello, I am using function lmodel2 to calculate RMA regression between life-history traits in ladybirds beetles. It works well but I am not able to plot an RMA regression line on the scatterplot of my data. I am of course unable to plot the confidence intervals. For ordinary least square regression abline(lm(x~y))works well but for RMA regression, abline(lmodel2(x~y))does not do it. If somebody

Hi, I’m sorry, I know that it is a recurrent question but I have not been able to find the response in the Rhelp archives. I think my data require the use of the glmmPQL function but I do not know how to make the model selection. Since the AIC and log-likelihood are apparently meaningless, how can we select the parameters for a model and compare the models to find which one fits best the data?

...the case of uniform weights, qr can do the trick. I wonder if there is a way to do it in the case of non uniform weights by qr or svd ? Thanks in advances. St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web...

...does it says that 'K_MEANSC' function is not in load table??? It then just stops at that stage of the .R function. Thank you all for your time, Marie-Hélène ========================================================== Marie-Hélène Ouellette UNIVERSITE DE MONTRÉAL Département de sciences biologiques Tél. (514) 343-6111 poste 1233 ========================================================= [[alternative HTML version deleted]]

Dear R_Users, I am confronted to a technical issue that I wouldn't even know how to start to handle and where to look at. It is about data manipulation in a dataframe and value substitution Imagine I have a matrix describing a set of chemical equations. Colnames are Components names and Rownames are Reaction names Each cell in that matrix corresponds to the stoechiometric coefficient to the

...platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 1 minor 8.1 year 2003 month 11 day 21 language R St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web...

...uot; "o" "t" "y" [15,] "E" "J" "O" "T" "Y" > Thanks in advance ! St??phane DRAY -------------------------------------------------------------------------------------------------- D??partement des Sciences Biologiques Universit?? de Montr??al, C.P. 6128, succursale centre-ville Montr??al, Qu??bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web...

I am not sure a previous e-mail reached the list (no mail aknowledgement from R-boundle etc.). The question was how to write polygon or segment coordinates into a shapefile set or any other ArcGIS supported format. The library shapefiles seems to do something but the documentation is a bit beyond of my mind.... and I cannot get the meaning of the functions write**** and its application to the case

...sing the RSAGA package provide some help in telling me what I did wrong? Thanks for your help, Am?lie -- -------------------------------------------------------------------------------------------------------------------------------- *Am?lie Lescro?l* Postdoc - Seabird ecology Centre d?Etudes Biologiques de Chiz? ? 79360 Villiers en Bois ? France *_http://www.cebc.cnrs.fr/Fidentite/lescroel/lescroel.htm_* *_http://www.cebc.cnrs.fr/ecomm/En_ecomm/En_index.html_* *_http://www.penguinscience.com_* <http://www.penguinscience.com/> ---------------------------------------------------------------...

Dear All, I am using the scatter.dudi finction in the 'ade4' package to produce correspondence analysis (nice) plots. I do not seem to figure out how to plot the raw coordinates only -- or column coordinates only. I would appreciate any help in doing that. Here is the example I am following -- from the package. data(banque) > banque.acm <- dudi.acm(banque, scann = FALSE, nf =

Bonjour, J'etudie une population de chevaux en captivite. Je souhaite identifier le ou les facteurs qui influencent la fecondite des femelles (=nombre de poulain= 0 ou 1) depuis 1995 jusqu'a 2003. Les variables explicatives sont donc disponibles pour les femelles par annee : fem1_annee1 fem2_annee1 fem3_annee1 fem1_annee2 fem2_annee2 fem3_annee2 fem4_annee2 etc. Le nombre de femelles

How can I add a color bar to show the color scales to what is generated by image(), similar to the one in figures generated by filled.contour()? Thanks. Y. C. Tao

Does R have a function to calculate Bray-Curtis distance measures, which is probably one of the most frequently used and recommended dissimilarity measures in ecology? It isn't mentioned in dist().

Bonjour à tous, Je débute dans l'utilisation de R, et suis à la recherche de toute piste me permettant l'introduction à ce logiciel. J'ai pour le moment la fiche d'Emmanuel Paradis: "R pour les débutants", mais j'aimerais savoir où je peut trouver d'autres documentations notamment pour le traitement statistique de données (Anova, modèle linéaire et modèle

...ead the previous discussion on this list "do.call and environment") but can not find how to solve it. Hope that somebody can help me, Sincerely. St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web...

Hello I have some kind of problem with R. I want to do a pca (I work on R and ade4 library) but R doesn't wan to realize my pca because of my data: I have some binary variable (presence/absence of birds, hole, vegetals...) and metric variable (cliff 's size...) and each time I have an error message because of the mix of the 2 type of variable. So, what can I do? Famille SALMON