similar to: table of Design regressions?

Hello all I have a big data frame and I regularly want to break it down into subsets, calculate some new data, and add it back to the data frame. At the moment my technique seems a bit ugly and embarrassing. Something like: result <- by(mydata, mydata$some_factor, function (x) { # do something to create a vector v with length(v) == nrow(x) return(v) }) # now result has a big list, argh...

Hello all I'm moving back and forth between stata and R at the moment - of course, using R whenever possible :-) I'm running conditional logits on some panel data and I get slightly different results and different N in the two programs. In R I run clogit(trans.dem ~ I(avg.gle_rgdp.500/gle_rgdp) + log(gle_rgdp) + timesince.dem + I(timesince.dem^2) + timesince.dict + I(timesince.dict^2) +

Hello all I have a fit resulting from a call to glm. Now, I would like to extract the model frame MF, and add some variables from the original data frame DF. To do this, I need to know which rows in DF correspond to rows in MF (since some were dropped by na.omit). How can I do this? It''s probably simple but the information is hard to find. David Hugh-Jones Post-doctoral Researcher Max

Hi all I want to get the design matrix for a model, evaluated at a single value. For example, if I pass in a data frame with a=2, b=2, y=3, and my model is y ~ a+b+a:b, then I would like to get the values 3, 2, 2, 4 out. I can do this with: tmp <- model.matrix(fit, data=mydata) or tmp <- predict(fit, newdata=mydata, type="terms") However, if the fit had a smoothing spline

Hello, I am trying to use the package "exams" to construct problem sets. I have constructed an exercise which generates a list of integers and asks the student to compute the median. rx is the vector of n numbers >str(rx) num [1:16] 21 9 8 18 4 12 17 2 9 7 ... I want to print out the entire vector as part of the problem. When I use \Sexpr(rx) only the first value (in this case

I'm rather puzzled by this behavior: e export("caption<-", "caption", "label", "label<-", "align<-", "align", "digits<-", "digits", "display<-", "display", "xtable", "print.xtable", "toLatex.xtable") > e[[1L]] e[[1L]] export >

I've been experimenting recently with the fantastic Sweave/xtable combination for generating latex. In the xtable vignette, I found this great example of printing a ts object by months. Is there a way to modify this code to generate RED numbers inside xtable for negative results in x.ts? Thanks in advance. - Ken # Sweave/xtable snippet below

Hola: El 15/07/13 09:41, José Luis Cañadas Reche escribió: > Hola. Yo suelo utilizar knitr, con sweave creo qeu había que utilizar > print(objeto xtable) > > De esta forma, utilizando xtable > > > library(xtable) > tabla.xtable <- xtable ( tutabla) > print(tabla.xtable) No es necesario utilizar print, con xtable(tutabla) basta. Las excepciones son cuando hay que

I have installed package xtable with su -c 'R CMD INSTALL xtable' and got this promising feedback: * Installing *source* package 'xtable' ... ** R ** data ** help >>> Building/Updating help pages for package 'xtable' Formats: text html latex example * DONE (xtable) Despite that, R returns: Error: couldn't find function "print.xtable"

I am just starting to learn Sweave (really neat tool). I am pretty early in the learning curve (I had to think a moment ago whether a # or % was the appropriate comment character). I have successfully incorporated simple graphics and outputs, but am having trouble getting a latex (xtable) table to function properly. Latex is seemingly treating the xtable code as input or verbatim text. That

I've been experimenting recently with the fantastic Sweave/xtable combination for generating latex. In the xtable vignette, I found this great example of printing a ts object by months. Is there a way to modify this code to generate RED numbers inside xtable for negative results in x.ts? Thanks in advance. - Ken # Sweave/xtable snippet below

Hi there, I'm very new on R and I hope someone can help me to solve the problem in using the ifelse statement with the xtable function(library xtable). I'm trying to get the printing of the elements of two lists in a sorted way. These two list have in common the their names. I will try to give an example: the first list looks like this: $code1 Code code1 Nation

Hola a todos Les consulto por un problema con xtable y nlme, tomando un ejemplo del manual de nlme para obtener los resultados en latex utilizando xtable, se puede utilizar el siguiente código, pero hay un problema y causa error. library(nlme) library(xtable) fm1 <- nlme(height ~ SSasymp(age, Asym, R0, lrc), data = Loblolly, fixed = Asym + R0 + lrc ~ 1,

Hi all, Let me know if I need to ask this question of the bioconductor group. I used the bioconductor utility to install this package and also the CRAN package.install function. My computer crashed a week ago. Today I reinstalled all my bioconductor/R packages. One of my scripts is giving me the following error: in my script I set: library("xtable") print.xtable(.... and receive this

Dear R help: I am trying to use paste(), within an ifelse() statement to insert latex commands into an object that has been created using xtable(). I cannot make the strings behave as I would like, the '\t' is creating a tab, the usual method of '\\t' is not working either - nor is any series of backslashes. The xtable object, I think, automatically alters the strings. How

Dear useRs, Am trying to use xtable on the following data.frame and I don't get what I expect: example.table <- data.frame(rbind( c("Gender"," "," "," "), cbind(rep(" ",2),c("Male","Female"),c(3.0,4.0),c(3/7,4/7)) )) colnames(example.table) <- c(" "," ","number of

Hi all I know about producing a minimal example to show my problem. But I'm having trouble producing a minimal example that displays this behaviour, so please bear with me to begin with. Observe: I create an array called model.mat. Some details on this: > str(model.mat) num [1:18, 1:4] -0.170 -0.304 -2.617 2.025 -1.610 ... - attr(*, "dimnames")=List of 2 ..$ : chr

Hola Tengo un problema con Sweave y xtable, concretamente quiero cambiar el color según un criterio, creo que es más fácil explicar con los siguientes ejemplos, uno puede correr directamente porque es R, al siguiente código hay que guardarlo como Rnw, y luego puede ser corrido en R, donde seguramente al correr este se darán cuenta de mis dos problemas porque saltan al abrir el pdf que se obtiene

Dear R-users, I've enhanced the "xtable" package, adding numerous features that have been requested by users. The changes are listed below. The objective throughout has been to avoid any breaking changes. However, as "xtable" is widely used and is a dependency of many packages I'd like to have others try it out before I post it to CRAN. Both bug reports and design

For example, the following changes are necessary when i convert a Japanese hiragana into katakana in chattr. R code: > chartr("\u3041-\u3093","\u30a1-\u30f3","\u3084\u3063\u305f\u30fc") --- R-alpha.orig/src/main/character.c 2007-09-05 07:13:27.000000000 +0900 +++ R-alpha/src/main/character.c 2007-09-13 16:10:21.000000000 +0900 @@ -2041,6 +2041,16 @@