search for: halieutiques

Hi, I am using the densCols to draw a high volume scatter plot. Instead of using the default local density, I would like to take log of the local density and then map them to the colors. I could not figure out how to do that. For example: plot(x,y,col=densCols(x,y,"log")) ? Any help would be appreciated! Jiaxiu [[alternative HTML version deleted]]

I have just began to use R. I would like to know where I can find in R the equivalent of the LSMEANS of SAS when I realise a lm.. In the summary, there is the estimate but it's different of the LSMEANS. In advance, thank you. Martial Laurans Laboratoire Halieutique de Rennes ENSAR 65 rue de St Brieuc CS 84215 35042 Rennes

I am trying to fit regression models type II with R, but it seems to me that most (all) of the linear model functions are for type I regressions. Does anyone knows whether type II regressions functions exist in R. Benjamin -- Benjamin Planque IFREMER Laboratoire d'Ecologie Halieutique BP 21105 44311 Nantes Cedex 03 France Tel: +33 (0)2 40 37 41 17 Fax: +33 (0)2 40 37 40 75 e-mail:

Dear R-user, I am trying to use the R "nlme" function to fit a non linear mixed effects model. The model I wand to fit is an individual somatic growth model with 4 parameters. For all parameters both fixed and random effects have to be estimated, as well as their covariance matrix (see the formula bellow). The data are simulated with the same growth model as in the nlme, with know

...nction seems not suitable for a vectorization using sweep) Alternatively, a method to recover the wished array dimensions afterward would be also acceptable. Many thanks in advance. Yves -- --------------------------------------------------- Yves REECHT Dpt STH (Sciences et Technologies Halieutiques) IFREMER, BP 70 29280 PLOUZANE FRANCE tel. +33 (0)2 98 22 43 69 ------------------------------------------)><))))°> [[alternative HTML version deleted]]

Hi everybody, I want to use the cluster package (Cluster Analysis Extended Rousseeuw et al.). I downloaded it from the CRAN and installed it on my linux system (fedora core 4). All seemed to be allright. But when trying to launch examples, I obtained the following message : > library(cluster) > data(votes.repub) > agn1 <- agnes(votes.repub, metric = "manhattan",

Hi I need to a function that automatically fits a regression to data, using the stepAIC. I've ran the code manually and it works fine. However, when I run the function on the same data, the following error occurs: Problem in regimp(fullsim = simt, fullsim1 = simt1,..: Length of (weights) (variable 4) is 4271 != length of others (4278) I got the function to output the length of the dataset

Hi , I just imported a large data set from notepad. I want to label the columns in R. I used 'import Dataset' to bring in my data set Now, I would like to label V1,V2,V3 etc?? Thanks -- View this message in context: http://r.789695.n4.nabble.com/Naming-columns-tp4674595.html Sent from the R help mailing list archive at Nabble.com.

...E.NP + CPUE.W + CPUE.C + Year + Quarter + Latitude + Longitude)^2, family = binomial, data = CPUE_table) ----------------------------------------------------------------------- -- <>< <>< <>< <>< Xochitl CORMON +33 (0)3 21 99 56 84 Doctorante en sciences halieutiques PhD student in fishery sciences <>< <>< <>< <>< IFREMER Centre Manche Mer du Nord 150 quai Gambetta 62200 Boulogne-sur-Mer <>< <>< <>< <><

Dear all! I have a data frame composed by 13 columns (year, and 12 months). I want to transform this data base in another like this year month values 1901 1 1901 2 1901 3 ..... 1901 12 1902 1 1902 2 .... 1902 12 Is there a possibility to succeed that in R? Thank you! best regards! CR -- --- Catalin-Constantin ROIBU Lecturer PhD, Forestry engineer Forestry Faculty of Suceava Str.