search for: cologie

...: singular gradient' 6. Would anyone know if I can get R to skip non-converging use of nls() so that I can at least obtain the parameters for the curves which R can fit? Thanks for your time, Marc =================== Marc B?lisle Professeur adjoint Chaire de recherche du Canada en ?cologie spatiale et en ?cologie du paysage D?partement de biologie Universit? de Sherbrooke 2500 Boul. de l'Universit? Sherbrooke, Qu?bec J1K 2R1 Canada T?l: +1-819-821-8000 poste 61313 Fax: +1-819-821-8049 Courri?l: Marc.M.Belisle at USherbrooke.ca

...vel 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 contained in id, as lmList would do... Thanks for your time, Marc =================== Marc B?lisle Professeur adjoint Chaire de recherche du Canada en ?cologie spatiale et en ?cologie du paysage D?partement de biologie Universit? de Sherbrooke 2500 Boul. de l'Universit? Sherbrooke, Qu?bec J1K 2R1 Canada T?l: +1-819-821-8000 poste 61313 Fax: +1-819-821-8049 Courri?l: Marc.M.Belisle at USherbrooke.ca

Hello, i' m looking for a function to compute geary statistic for spatial correlation. Thanks. -- St?phane DRAY --------------------------------------------------------------- Biom?trie et Biologie ?volutive - Equipe "?cologie Statistique" Universite Lyon 1 - Bat 711 - 69622 Villeurbanne CEDEX - France Tel : 04 72 43 27 56 Fax : 04 78 89 27 19 04 72 43 27 57 E-mail : dray at biomserv.univ-lyon1.fr --------------------------------------------------------------- ADE-4 http://pbil.univ-l...

...4),rep("c",4))) data_ac <- data[which(data$F1 !="b"), ] levels(data_ac$F1) Why the level "b" is always present ? thanks Tristan, R 2.0.1 for Linux Fedora 3 -- ------------------------------------------------------------ Tristan LEFEBURE Laboratoire d'?cologie des hydrosyst?mes fluviaux (UMR 5023) Universit? Lyon I - Campus de la Doua Bat. Darwin C 69622 Villeurbanne - France Phone: (33) (0)4 26 23 44 02 Fax: (33) (0)4 72 43 15 23

...t<-c("a","b","c") #I don't find how to boxplot them using a less stupid way than : boxplot(get(list[1]),get(list[2]),get(list[3])) Thanks for any advice ! -- ------------------------------------------------------------ Tristan LEFEBURE Laboratoire d'??cologie des hydrosyst??mes fluviaux (UMR 5023) Universit?? Lyon I - Campus de la Doua 6 rue Dubois 69622 Villeurbanne - France Phone: (33) (0)4 72 43 29 45 Fax: (33) (0)4 72 43 15 23 ______________________________________________ R-help at stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mail...

...r 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 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 Canada Tél: +1-819-821-8000 poste 1313 Fax: +1-819-821-8049 Courriél: Marc.M.Belisle@USherbrooke.ca [[alternative HTML version deleted]]

...d, + na.action=na.omit, + data=data) > reg Call: Model: mass ~ SSfpl(age, A, B, xmid, scal) | id Data: data Coefficients: Error in !unlist(lapply(coefs, is.null)) : incorrect type of argument =================== Marc B?lisle Professeur adjoint Chaire de recherche du Canada en ?cologie spatiale et en ?cologie du paysage D?partement de biologie Universit? de Sherbrooke 2500 Boul. de l'Universit? Sherbrooke, Qu?bec J1K 2R1 Canada T?l: +1-819-821-8000 poste 61313 Fax: +1-819-821-8049 Courri?l: Marc.M.Belisle at USherbrooke.ca

...nu" $status [1] "" $major [1] "2" $minor [1] "0.0" $year [1] "2004" $month [1] "10" $day [1] "04" $language [1] "R" -- ------------------------------------------------------------ Tristan LEFEBURE Laboratoire d'?cologie des hydrosyst?mes fluviaux (UMR 5023) Universit? Lyon I - Campus de la Doua Bat. Darwin C 69622 Villeurbanne - France Phone: (33) (0)4 26 23 44 02 Fax: (33) (0)4 72 43 15 23

...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 du paysage D?partement de biologie Universit? de Sherbrooke 2500 Boul. de l'Universit? Sherbrooke, Qu?bec J1K 2R1 Canada T?l: +1-819-821-8000 poste 61313 Fax: +1-819-821-8049 Courri?l: Marc.M.Belisle at USherbrooke.ca

...rchar(255) , varchar(255) )" Error in sqlColumns(channel, tablename) : fau01 :table not found on channel 0 How can i save my dataframe ??? Thanks in advance. -- St?phane DRAY --------------------------------------------------------------- Biom?trie et Biologie ?volutive - Equipe "?cologie Statistique" Universite Lyon 1 - Bat 711 - 69622 Villeurbanne CEDEX - France Tel : 04 72 43 27 56 Fax : 04 78 89 27 19 04 72 43 27 57 E-mail : dray at biomserv.univ-lyon1.fr --------------------------------------------------------------- ADE-4 http://pbil.univ-l...

Hi R-users, I am new to R environment.I want to carry out a correspondence analysis on a contigency table with 64 columns and 298 observation of Environmental data.In many cells of the contigency table the frequency is just the value '1'. I got the following error. > CAIV(Eplankton) Error in if (L[i, j] < 0) return("Table L must contain non-negative numbers") :

...39;t have Visual C++ (and i don't want to buy it !!) but i want to obtain R.lib file. Is there a solution to my problem ??? Any help would be greatly appreciated. -- St?phane DRAY --------------------------------------------------------------- Biom?trie et Biologie ?volutive - Equipe "?cologie Statistique" Universite Lyon 1 - Bat 711 - 69622 Villeurbanne CEDEX - France Tel : 04 72 43 27 56 Fax : 04 78 89 27 19 04 72 43 27 57 E-mail : dray at biomserv.univ-lyon1.fr --------------------------------------------------------------- ADE-4 http://pbil.univ-l...

...e). I thought that svd is a generalisation of eigen for non-square matrices but apparently, there are more differences ? I 've R1.2.3 on W2000. Thanks in advance. -- St?phane DRAY --------------------------------------------------------------- Biom?trie et Biologie ?volutive - Equipe "?cologie Statistique" Universite Lyon 1 - Bat 711 - 69622 Villeurbanne CEDEX - France Tel : 04 72 43 27 56 Fax : 04 78 89 27 19 04 72 43 27 57 E-mail : dray at biomserv.univ-lyon1.fr --------------------------------------------------------------- ADE-4 http://pbil.univ-l...

...),start=mystart) summary(quasi) # test t for coefficients anova(quasi,test="F") # F test (quasi glm) instead of Chisq test (classical glm) Thanks in advance. -- St?phane DRAY --------------------------------------------------------------- Biom?trie et Biologie ?volutive - Equipe "?cologie Statistique" Universite Lyon 1 - Bat 711 - 69622 Villeurbanne CEDEX - France Tel : 04 72 43 27 56 Fax : 04 78 89 27 19 04 72 43 27 57 E-mail : dray at biomserv.univ-lyon1.fr --------------------------------------------------------------- ADE-4 http://pbil.univ-l...

Dear R-users How can I get the eigenvalues out of an lda analysis? thanks a lot christoph -- Christoph Lehmann <christoph.lehmann at gmx.ch>

Hi, I am looking for some code for Moran's I. Has anyone previously done this? I have been unable to find it in the search engines. James

...t<-c("a","b","c") #I don't find how to boxplot them using a less stupid way than : boxplot(get(list[1]),get(list[2]),get(list[3])) Thanks for any advice ! -- ------------------------------------------------------------ Tristan LEFEBURE Laboratoire d'??cologie des hydrosyst??mes fluviaux (UMR 5023) Universit?? Lyon I - Campus de la Doua 6 rue Dubois 69622 Villeurbanne - France Phone: (33) (0)4 72 43 29 45 Fax: (33) (0)4 72 43 15 23

...ut I just try the function and the error is still there. I hope the authors will read my mail. Sincerely yours, Fred. -- Dr. Fr?d?ric Chiroleu Biom?tricien UMR 53 PVBMT (Peuplements V?g?taux et Bio-agresseurs en Milieu Tropical) CIRAD-AMIS P?le de Protection des Plantes (3P) Laboratoire d'?cologie Terrestre et de Lutte Int?gr?e (LETLI) 7, chemin de l'IRAT Ligne Paradis 97410 Saint-Pierre ?le de la R?union - France T?l. : 02 62 49 92 30 Standard : 02 62 49 92 00 Fax : 02 62 49 92 93 courriel : frederic.chiroleu at cirad.fr

Hi all, Has anyone got a function to perform clustering by Flexible UPGMA (Un-weighted Pair Group Using Arithmetic Averaging) . It does not seem to exist in any R package. Regards, Ton -- Laboratoire d'Hydro?cologie Quantitative 3 bis, Quai Chauveau - CP 220 69336 LYON cedex 09 t?l. : +33 (0)4.72.20.89 20 fax : +33 (0)4.78.47.78.75 mail : ton.snelder at cemagref.fr http://www.lyon.cemagref.fr/bea/dynam/index.shtml

Hello, I am trying to run a PCA in R and I cannot get the PC scores for each of the values. Using pcX <- princomp(X) then loadings(pcX) I can get a listing of the eigenvectors but not the actual PC scores for each value in the dataset. I greatly appreciate any help anyone can offer Thanks Ken