search for: malfonso

Is there a R function for sort a data frame by a variable ? I know sort a vector, but I don't know sort a data frame by a column. Can you help me ? the sort() function don't work with data frame.

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Hi R users. I'm using the lattice library and I need a print version for my graphics. How Set I my boxplot's lines to black ???? tpl<-trellis.par.get("plot.line") tpl$col<-"black" trellis.par.set("plot.line", tpl) Don't work. Boxplot's lines aren't black. Thanks a lot. This is my script. library(lattice) # I set background's

Hola, a todos los usuarios de R. Me gustar?a saber que pasos hay que seguir para que un manual o tutorial acerca de R escrito por un usuario quede disponible en CRAN. Escrib? un tutorial de Sweave en espa?ol y quiero colocarlo a disposici?n de los usuarios de R pero no se cuales son los pasos a seguir, a quien hay que dirigirlo y que requisitos se requieren para eso.

Hi. I need to draw a circle whit center (a,b) and radio r. So I use the R code below a<-1.975 # valore x del centro b<-1.215 # valores y del centro r<-1.46 # radio x1<-seq(a-r,a+r,by=0.01); #los valores de x yp<-sqrt(r^2-(x1-a)^2)+b; # los valores y a partir de la ra??z positiva yn<-(-1)*sqrt(r^2-(x1-a)^2)+b; # los valores y a partir de la ra??z negativa x<-c(x1,x1);

En espa?ol (In Spanish) Necesito calcular la en numeros de combinaciones de n cosas tomando k al tiempo. Como hago eso en R ??? Yo escrib? mi propia funci?n pero pienso que de esa forma no es f?cil para mis estudiantes . He estado buscando en la ayuda y no he encontrado informaci?n sobre una funci?n que calcule eso directamente. Podr?an ayudarme In English (en Ingl?s ) I need calculate

...-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > > ------------------------------ Message: 3 Date: Sun, 19 Aug 2007 08:06:46 -0500 From: Mario Alfonso Morales Rivera <malfonso at sinu.unicordoba.edu.co> Subject: [R] can't find "as.family" function To: r-help at stat.math.ethz.ch Message-ID: <46C84066.6040108 at sinu.unicordoba.edu.co> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi R users, I want to use dglm Package. I run the e...

I need to install several (too many) packages from local *.zip files. is there any form to do it without clicking? I'm asking for a R code that allow me perform these task. ----------------------------------- Mario Alfonso Morales Rivera. Profesor Asistente. Departamento de Matem??ticas y estad??stica. Universidad de C??rdoba.

Hi R users I haven't run odfWeave example, R give me: Setting wd to C:\DOCUME~1\MARIOM~1\CONFIG~1\Temp\Rtmph2Nzqb/odfWeave19070343633 Copying C:/ARCHIV~1/R/R-23~1.1/library/odfWeave/examples/simple.odt Decompressing ODF file using unzip -o "simple.odt" Erro en odfWeave(demoFile, outputFile) : Error unzipping file Adem?s: Warning message: unzip no encontrado I have installed

Is there any R function to perform factor analysis using Principal Component Method? why factanal() method is " always "mle" " ?

Dear R users, When I use beamer with \usepackage{harvard} it don't work. \LaTeX{} give mi an error message, ?any suggestion? ! LaTeX Error: No counter 'paragraph' defined. See the LaTeX manual or LaTeX Companion for explanation. Type H <return> for immediate help. ... l.741 \newcounter{lsubparagraph}[paragraph] ? ! Emergency stop. ... l.741

Hi R users, I want to use dglm Package. I run the examples and it give me an error: Error en dglm(lot1 ~ log(u), ~1, data = clotting, family = Gamma) : no se pudo encontrar la funci?n "as.family" dglm can't find "as.family" function why ? Thank you for your help

Dear all I need to run an anova from a factorial model y_{ijk}=\alpha_i+\beta_j+(\alpha\beta)_{ij}+e_{ijk} and calculate type II and III sums of square, but I have an empty cells, so anova function from package car fail. (I believe) y<-c(7,13,6,10,8,11,8,3,7,5,65) a<-as.factor(c(1,1,2,2,3,3,3,1,1,1,2)) b<-as.factor( c(rep(1,7),rep(2,4)) ) table(b,a) # cell (2,3) is empty

Hello I know how read a file in excel format into a R data frame using the RODBC library, but I don't know how write a R data frame in excel format. I don't understand the instructions from RODBC user manual. To read an excel file I use. library(RODBC); conex<-odbcConnectExcel("fis_quim.xls"); sqlTables(conex); data<-sqlFetch(conex,"hoja1"); Suppose I