search for: paysages

Hello, I apologize if this seems like an obvious question, but I have been looking everywhere and have yet to find an answer. I am doing a multinomial regression with multinom() in the nnet package. I have a 3 level ordered response (ordered()) variable and 4 predictors, 3 of which are numerical and one which is an ordered factor (also ordered()) with 5 levels (a, b, c, d, e). My question is in

Howdee, My question appears at #6 below: 1. I want to model the growth of each of a large number of individuals using a 4-parameter logistic growth curve. 2. nlme does not converge with the random structure that I want to use. 3. nlsList does not converge for some individuals. 4. I decided to go around nlsList using: t(sapply(split(data, list(data$id)), function(subd){coef(nls(mass ~

...ity ecology analysis, I would like to calculate the correlation between two dissimilarity matrices, controlling for a third distance matrix representing geographical distances between sites. Thanks! Christophe Bouget Biodiversité et gestion des forêts de plaine - Ecosylv Ecosystèmes forestiers et paysages Institut de recherches pour l'ingénierie de l'agriculture et de l'environnement - CEMAGREF Domaine des Barres F-45 290 Nogent-sur-Vernisson [[alternative HTML version deleted]]

Is there a way to apply a function, say cor(), to each combination of some number of variables, and this, without using loops? For example, I have day, hour, var1 and var2. How could I compute cor(var1,var2) for each day*hour combination and obtain a matrix with day, hour and the cor value for each combination? Thanks for your time, Marc =================== Marc Bélisle Professeur adjoint

Howdee, *** I know that the lmList() function exists, yet I don't want to use it. *** Would anyone be kind enough to tell how I can apply the function lm() to each level of a given factor so to obtain the intercept and slope for each factor level within a matrix? For instance, suppose a dataframe containing 3 variables: id, x and y. I want to compute the function lm() for each level

...n in libFLAC ? Maybe some other developpers will have to use libFLAC with JNA, and continue to update the lib without having to patch it. Thanks for your attention and for your great work with flac development, Best regards, -- Christophe Dumont Bibliothèque nationale de France DSI Exposition Paysages français – Une aventure photographique (1984 - 2017) - du 24 octobre 2017 au 4 février 2018 - BnF - François-Mitterrand Avant d'imprimer, pensez à l'environnement. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/flac-dev/...

Hello. I have a data base with 50 qualitative variables and a lot of individuals. I try to estimate the links between one of these variables (landcover) and the 49 others (geomorphology, hydrography...). I want to use a "discriminant analysis on qualitative variables" (as DISQUAL in SPAD) or a " log-linear model ". Which R-Package(s) or other methods can you advise me.

How do one dertermine the optimal number of rescaling cycles to use when performing DCA using the decorana function (library vegan)? Thanks for your time, Marc =================== Marc Bélisle Professeur adjoint Chaire de recherche du Canada en écologie spatiale et en écologie du paysage Département de biologie Université de Sherbrooke 2500 Boul. de l'Université Sherbrooke, Québec J1K 2R1

Howdee, I am able to fit a 4-parameter logistic growth curve to a dataset which comprise many individuals (using R v. 2.3.1). Yet, if I want to obtain the parameters for each individual (i.e., for each 'id') using nlsList, then I obtain an Error message which I have trouble interpreting. Any advice as to how I can solve this problem? Thanks for your time, Marc > reg <-nls(mass ~

...y a list of character: "unfenced" and Y by "fenced", as well as moving the legend in another place in my graphic... is someone know how to do that with a scatterplot? Thank's Julien -- Julien Beguin Etudiant-chercheur au doctorat Laboratoire d'analyse quantitative des paysages, local 2113 Facult? de Foresterie et de G?omatique Universit? Laval 2405 rue de la Terrasse, G1V 0A6 Qu?bec (Qc) Tel: (418) 656-2131 poste 2620

Hi there, I have 3 numeric variables: day (e.g., 05), month (e.g., 06), year (e.g., 2009). I would like to create a (string) variable of the following form: month/day/year (e.g., 06/05/2009). I would be grateful to anyone who could point me toward a solution. Sincerely, Marc =================== Marc B?lisle Professeur agr?g? Chaire de recherche du Canada en ?cologie spatiale et en ?cologie

...download first "sp" can anybody tell me what mistake I did and how (where?) I can get these packages Thank you very much by advance <http://probability.ca/cran/> -- Philippe Lagacherie Ingénieur de Recherche HDR Animateur équipe " Organisation Spatiale et Fonctionnement des Paysages Cultivés" INRA LISAH Montpellier Tel +33 (0)4 99 61 25 78. fax +33 (0)4 67 63 26 14 lagache@supagro.inra.fr Attention changement d'adresse email !!!! [[alternative HTML version deleted]]