similar to: multiple nls - next fit even after convergence problem

I am having difficulty understanding the syntax of the nlme() function for nonlinear mixed models. The data frame is called Marouane.chlorophyll. The model involves a dependent variable (Absorb) and an independent variable (Ch.surf), which are both numeric variables in the data frame. The data are hierarchically grouped as Espece, Plante nested within Espece, and Feuille nested within Plante

Hi, Why this function doesn't work? function (x) { if (is.factor(x)) { if (!is.ordered(x)) { warning("La mediana non si puo' calcolare!!!") return(NA) } me <- median(unclass(x)) if (me - floor(me) != 0) { warning("Mediana indeterminata") return(NA) } else

Hola que tal alguien de ustedes me podría auxiliar, lo que pasa es que estoy tratando de hacer un programa en R utilizando la siguiente tabla: x<1 km x>1km Estabilidad a c d f c d f A 213 440.8 1.94 9.27 459.70 2.094 -9.6 B 156 106.6 1.15 3.30 108.20 1.098 2.0 C 104 61.0 0.91 0.00 61.00 0.911 0.0 D 68 33.2 0.73 -1.70 44.50 0.516 -13.0 E 51 22.8 0.68 -1.30 55.40 0.305

A disturbing behaviour of R: an import of data using RODBC library (Windows 98, R 1.1.1) recognizes accented characters in variables names but these can't be manipulated further. See below: > library(Rodbc) > ch<-odbcConnect("Paradox Files") > pollut<-sqlFetch(ch,Pollutio) > pollut Mortalit? Densit? Pollution 1 82 600 110 2 97 960

Hello, I have been looking for functions for calculating the within-groups variance and between-groups variance, for the case where you have several numerical variables describing samples from a number of groups. I didn't find such functions in R, so wrote my own versions myself (see below). I can calculate the within- and between-groups variance for the Sepal.length variable (iris[1]) in

Hello, I am new to non-linear growth modelling in R and I am trying to reproduce an analysis that was done (successfully) in S-Plus. I have a simple non-linear growth model, with no nesting. I have attempted to simplify the call as much as possible (by creating another grouped object, instead of using subset= and compacting the fixed and random expressions.) This is a what the grouped

Hello all, A quick question concerning a behavior of reshape I fail tu understand, probably something obvious but I just can't see it. With the following data frame further referred to as tab :

Hola Carlos, el ubuntu tiene compilador :) Este es el error completo al querer instalar el paquete stringr Installing package into ?/home/jose210179/R/i686-pc-linux-gnu-library/3.2? (as ?lib? is unspecified) --2016-03-15 21:46:23-- https://cran.rstudio.com/src/contrib/stringr_1.0.0.tar.gz Resolviendo cran.rstudio.com (cran.rstudio.com)... 54.230.163.212 Conectando con cran.rstudio.com

Buenas, he intentado varias veces instalar knitr y Rmarkdown tanto desde Rstudio como desde la terminal de Ubuntu usando diferentes codigos y en nunca consegui q lo instalara. el error q tira es el siguiente: Warning in install.packages : installation of package ?/tmp/RtmpavyTWw/downloaded_packages/stringr_1.0.0.tar.gz? had non-zero exit status Alguien me podria ayudar, porq estoy dejando

Hola Javier, si no estoy entendiendo mal, lo q deseo hacer no se trata de configurar los parametros SQL, sino solo de colocar un vector en el argumento VarTypes de la funcion sqlSave. El manual especifica esa opcion, pero no da ningun ejemplo de como usarla. *varTypes an optional named character vector giving the DBMSs datatypes to be used for* *some (or all) of the columns if a table is to be

Hi, i changed the options but the problem it's the same. I removed the dns forward, schema and smb2 leases = yes, but after 5 minutes the process smbd groes up for 100%. Follow the error (log leve = 3). http://pasted.co/6f36cf12 2016-08-21 5:54 GMT-03:00 Marc Muehlfeld <mmuehlfeld at samba.org>: > Hi Maiquel, > > Am 20.08.2016 um 21:03 schrieb Maiquel Consalter via samba: >

Buen dia Javier, muchas gracias por tu ayuda y el script compartido. Me va a servir como ayuda para seguir aprendiendo sobre RODBC pero no encuentro una solucion para este problema puntual de poder definir el tipo y ancho de las variables, q segun creo se hace con el argumento varTypes. Si alguien tien algun ejemplo donde haya usado la SqlSave y VarTypes, me sera de gran ayuda. Abrazo a todos

Hi, I'm trying to start using Linux. I'm just trying to leve away Windows. But cause I'm architect there's only one program I'have to use and I can't install in Linux; Archicad. I'm using Archicad v.10. Anybody can tell me if there is a solution? Thanks! FDF

I have dataframe with 17factors variables (for example every factor have 3levels) I have maybe 5000 observation. And i need to do table where is in every raw 1 of possible combination of this factors and the numbur how many time is this combination in my dataset. I wrote one code, but this is very slow and dumb. it looks like this: i<-0 for(i1 in levels(hivdat$pohl)){

Hola. Tengo que bajarme varias tablas del INE y necesito interactuar con el navegador. Ví el fantástico post que escribió Gregorio Serrano (que la tierra le sea leve), en http://www.grserrano.net/wp/2014/01/relenium-el-siguiente-nivel-de-web-scraping-con-r/ y estoy intentando reproducirlo para aprender como funciona relenium Pero relenium me da error después de if(!require(relenium))

https://bugs.freedesktop.org/show_bug.cgi?id=97192 Bug ID: 97192 Summary: SuperTuxkart graphic errors [NVE4 - GK104] Product: Mesa Version: unspecified Hardware: x86-64 (AMD64) OS: other Status: NEW Severity: normal Priority: medium Component: Drivers/DRI/nouveau Assignee:

Buen dia compañerxs de R, les traigo una pregunta bastante especifica. En el trabajo me estan requiriendo el uso de SQL, asi q estoy aprendiendo a usarlo desde R, con el paquete RODBC. Mi problema puntual es que al crear una tabla en el servidor SQL a partir de un data frame en R (usando la funcion sqlSave) no puedo definir el tipo de variables que quiero usar en el data frame. Segun entiendo

Hi, I'm fitting a standard nonlinear model to the luminances measured from the red, green and blue guns of a TV display, using nls. The call is: dd.nls <- nls(Lum ~ Blev + beta[Gun] * GL^gamm, data = dd, start = st) where st was initally estimated using optim() st $Blev [1] -0.06551802 $beta [1] 1.509686e-05 4.555250e-05 7.322720e-06 $gamm [1] 2.511870 This works fine but I

Bonjour, Je veux cherché l’estimateur de vraisemblance maximal (MLE)d’une fonction à 3 paramètre inconue étant donné une échantillon de taille 50 (les observations des valeurs de x) alors comment je peux procédé La fonction de densité est définie par : f(x)= 1/3(g(a1)+g(a2)+g(a3)) avec g(ai)=(exp(ai)*ai^x)/x! pour i=1,2,3. Je vous remercie beaucoup. A. Elhabti

Hello everybody! I finally managed to set up a Samba 3.0.1 PDC that ran perfectly in the test-environment. Problems arose, when I installed it in a real bureau network. On a prepared w2k client that was already a domain member one could log on to the domain with the administrator's account, but trying to add other w2k clients failed with error msgs like: "Domain controller not