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Hi All, I have strings made up of an unknown number of letters, digits, and spaces. Strings always start with one or two letters, and always end with one or two digits. A set of letters (one or two letters) is always followed by a set of digits (one or two digits), possibly with one or more spaces between the sets of letters and digits. A set of letters always belongs to the following set of

Hi All, Sorry if I ask an obvious thing, I am still new to R ... I created a data frame of given dimensions to which I gave strings as column names. I want to write to elements of the data frame by indexing them with the row number and column name (string). The problem is that I can read elements from the data frame in this way, but I cannot assign to elements in this way. Instead, I get the

Dear All, I am doing a parametric survival analysis with: fit <- survreg(Surv(xyz$start, xyz$stop, xyz$event, type="interval") ~ 1, dist='loglogistic') At this point I do not want to look into covariates, hence the '~1' as model formulation. As event types I have exact, interval, and right censored lifetime data. Everything works fine. For reasons that are

Hello, I would like to reorder columns in a data frame by their names as demonstrated below: Take this data frame: > xxx <- data.frame(matrix(1:40, ncol=8)) > names(xxx) <- letters[1:8] > xxx a b c d e f g h 1 1 6 11 16 21 26 31 36 2 2 7 12 17 22 27 32 37 3 3 8 13 18 23 28 33 38 4 4 9 14 19 24 29 34 39 5 5 10 15 20 25 30 35 40 and reorder the columns like

I have a vaiable named NAM having value : 1,2,3,4,5,6,7,8,9. I want to make an indicator variable that will take value 1 if NAM=7 or NAM=8 or NAM=9. How can I do that? I usually do: Var001<- ifelse(NAM==7,1,0) for the simplest case. [[alternative HTML version deleted]]

My understanding is that R will not make copies of lists if there is only one reference to the object. However, I've encountered a case where R does make copies, even though (I think) there should be only one reference to the object. I hope that someone could shed some light on why this is happening. I'll start with a simple example. Below, x is a list with one element, and changing that

Hello, I tried to install package ?TailRank? using the command install.packages (RankTail) and library (TailRank) but I got the following errors. So, how can I install TaiRank in Rstudio to have se beta-binomial distribution, CDF and inverse CDG of beta-binomal? The commands I used are: > install.packages("TailRank") Installing package into

Hi All? I was looking at a posting from June-17. I managed to solve it. However, when I changed the example in the posting, my solution will work only once at a time which was mentioned by Jim Lemon on his response to the original posting. This means that my solution will have to be repeated as many times as the maximum number of spaces on each gap; something that may not work well for large

Dear all,   i would like to count the number of times where I have combined occurrences of the categories of 2 variables.   For instance, in the dataframe below, i would like to know how many times each author (au1, au2, au3 represent the first, second, third author) is associated with each of the category of the variable 'nam'. The position of the author does not matter.   nam <-

Hello, I have a maybe trivial question, but I simply don't understand well enought how to work with text/strings: I have a rather compelx data structure, a big list with several sub-lists/dataframes and for certain calculations (which I do in loops), I only need a certain group of sub-lists/dataframes, which I want to specify with a name vector and paste together the object name and pass it

Hi everyone,   I have got the following problem:   x1 <- rnorm(10,5,1) x2 <- runif(10,0,1) nam1 <- paste("A",1:4,sep=".") nam2 <- paste("A",6:9,sep=".") nam <- c(nam1,"A.4",nam2,"A.9") mydata <- data.frame(x1,x2) rownames(mydata) <- nam Error in `row.names<-.data.frame`(`*tmp*`, value = c("A.1",

Hi all, Take this simple script, which I'm trying to use to understand when modification in-place occurs, and when a new object is created: message("Global") x <- 1:3 .Internal(inspect(x)) x[2] <- 1L .Internal(inspect(x)) message("In function") (function() { x <- 1:3 .Internal(inspect(x)) x[2] <- 1L .Internal(inspect(x)) })() If I run it from the

Hello, I?m experimenting with ALTREP and was wondering if there is a preferred way to create an ALTREP wrapper vector without using .Internal(wrap_meta(?)), which R CMD check doesn?t like since it uses an .Internal() function. I was trying to create a factor that used an ALTREP integer, but attempting to set the class and levels attributes always ended up duplicating and materializing the

>I am trying to use the Hmisc function transace to transform predictors > > test<-cbind(flowstress,pressres,alloy) > xtrans<-transace(x,binary=pressres',monotonic='flowstress', categorical='alloy') > > >and I am getting the following message?? >Error in ace(x[, -i], x[, i], monotone = im, categorical = ic) : > unused argument(s) (monotone ...)

I am trying to refer to a variable name in a lm regression where the variable name is in another variable, but it does seem to work. Here is an example: y<-rnorm(10) dat<-data.frame(x1=rnorm(10),x2=rnorm(10),x3=rnorm(10)) nam<-c('x1','x2','x3') library(gtools) com<-combinations(3,2,1:3) mod<-lm(y~nam[com[1,1]],data=dat) #error in model frame....:variable

Hi, I would like to know if it's ok to use .Internal(inspect(x)) in order to detect vector copying. Take for example the following silly code: f <- function() { x = seq(10) print(.Internal(inspect(x))) for(i in seq(10)) { x[i] <- x[i] + 1 print(.Internal(inspect(x))) } } The output of f() was: @bd7acf0 13 INTSXP g0c4 [NAM(1)] (len=10, tl=0) 1,2,3,4,5,... [1] 1 2

Hello, I was wondering if there were any plans for ALTREP lists (VECSXP)? It seems to me that they could be supported in a similar way to how ALTSTRING works, with Elt() and Set_elt() methods, or would there be some problems with that I?m not seeing due to lists not being atomic vectors? I was taking an approach of converting each list element (of a file-based list data structure) to an ALTREP

Hi, I did a quick search for other packages that provide the beta binomial distribution and found "rmutil". > install.packages("rmutil") The package has the CDF (pbetabinom) and inverse CDF (qbetabinom) among other functions. HTH, Eric On Wed, Nov 1, 2017 at 7:50 AM, MCGUIRE, Rhydwyn < rmcgu at doh.health.nsw.gov.au> wrote: > Hi there, > > It looks like

Hi there, When I run the following code, I could get correct objects (with correct values): for(i in 1:6) { #-- Create objects 'r.1', 'r.2', ... 'r.6' -- nam <- paste("r",i, sep=".") assign(nam, 1:i) # save(nam, file = paste(nam, "RData", sep = ".")) } I hope to save the object 'r.1',

Hi there, It looks like you also need the bioconductor package biobase, I found instructions for downloading that package here: www.bioconductor.org/install Good luck. Cheers, Rhydwyn -----Original Message----- From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Amany Abdel-Karim Sent: Wednesday, 1 November 2017 2:13 PM To: R-help at stat.math.ethz.ch Subject: [R] beta