similar to: R versus SAS

Hi, Recently I saw a couple of cases in which the package vignettes were somewhat complicated so that Stangle() (or knitr::purl() or other tangling functions) can fail to produce the exact R code that is executed by the weaving function Sweave() (or knitr::knit(), ...). For example, this is a valid document that can pass the weaving process but cannot generate a valid R script to be source()d:

Dear R experts--- after many years, I am planning to give in and write my first R package. I want to combine my collection of collected useful utility routines. as my guide, I am planning to use Friedrich Leisch's "Creating R Packages: A Tutorial" from Sep 2009. Is there a newer or better tutorial? this one is 4 years old. I also plan on one change---given that the

Hello Everyone,   Been learning R over the past several months. Read several books and have learned a great deal about data manipulation, statistical analysis, and graphics.   Now I want to learn how to make nice looking documents and about "literate programming." My understanding is that R users normally do this using LaTeX, MiKTeX, LyX, etc. in conjuction with Sweave. An alternative

Greetings, My question is more algorithmic than prectical. What I am trying to determine is, are the GAM algorithms used in the mgcv package affected by nonnormally-distributed residuals? As I understand the theory of linear models the Gauss-Markov theorem guarantees that least-squares regression is optimal over all unbiased estimators iff the data meet the conditions linearity,

I apologize if this has been addressed before; recently I read an article in Forbes which discussed how SCO was going after companies that have been using Linux. The article made the point that the ideas behind GPL are under attack precisely because no one is making sure that the code being put into the freely avail. packages isn't owned by someone else. Here's my question: Is R

Dear All: stepping in late, but @Joris, if you would like to take 'from a single file' literally, have a look at: https://github.com/bpfaff/lp4rp (lp4rp: literate programming for R packages); Cheers, Bernhard ps: incidentally, within the noweb-file roxygen is employed. -----Urspr?ngliche Nachricht----- Von: R-devel [mailto:r-devel-bounces at r-project.org] Im Auftrag von Joris

Hi: I have asked this question on Cross-Validated. So it might be a cross posting but havent received any responses to it. I am trying to see which distribution will best fit the data I am working on. The dataset is as following: Site Nausea headache Abdominal Distension 1 17 5 10 2 12

Hello all, I have got some data in SAS, and I export it to one excel workbook with multiple sheets, for example, each sheet has the sales information for each state. Then I need to use R to do plotting, analysis on those sales data, where I need to load the data from excel to R. When I read the article at this link: http://yihui.name/en/2009/09/how-to-import-ms-excel-data-into-r/ I am

Just curious if any of the Asterisk installers are doing anything special to protect themselves from a possible lawsuit caused by 911 failure during a Asterisk/computer crash? I realize that any traditional PBX or even a phone line can fail but, anything running on a computer is probably going to be less reliable than most PBXs. Anybody requiring customers to acknowledge and sign any kind of

Hi everyone, I am using package knitr, FIRST TIME. I don't have access to RStudio. Read through Yihui's page, didn't find it helpful. Stuck on terms Rnw, GFM (GitHub Flavored Markdown). Never used Sweave, so the reference is not helping. Is there a simple step-by-step example WITHOUT RStudio? My question: What is the procedure? The documentation explains the functions, but does

Hi, I wonder if this is expected or I'm doing a wrong thing. pdf() dev.control('enable') library("grid") plot(1) grid.text("A") res = recordPlot() dev.off() cairo_pdf() replayPlot(res) dev.off() *** caught segfault *** address 0x4, cause 'memory not mapped' > sessionInfo() R version 3.3.2 (2016-10-31) Platform: x86_64-apple-darwin13.4.0 (64-bit)

Hi, Recently I noticed file.copy() would discard the file mode information. Is this the expected behaviour or a bug for file.copy()? > file.create('testfile') [1] TRUE > file.info('testfile') size isdir mode mtime ctime testfile 0 FALSE 644 2011-03-05 17:06:39 2011-03-05 17:06:39 atime uid gid uname grname

Hi, Recently I noticed file.copy() would discard the file mode information. Is this the expected behaviour or a bug for file.copy()? > file.create('testfile') [1] TRUE > file.info('testfile') size isdir mode mtime ctime testfile 0 FALSE 644 2011-03-05 17:06:39 2011-03-05 17:06:39 atime uid gid uname grname

I have the following code: ``` rm(list=ls()) N = 30000 xvar <- runif(N, -10, 10) e <- rnorm(N, mean=0, sd=1) yvar <- 1 + 2*xvar + e plot(xvar,yvar) lmMod <- lm(yvar~xvar) print(summary(lmMod)) domain <- seq(min(xvar), max(xvar))??? # define a vector of x values to feed into model lines(domain, predict(lmMod, newdata = data.frame(xvar=domain)))??? # add regression line, using

Hi, I have a function knit_expand() and its source/Rd are below: https://github.com/yihui/knitr/blob/master/R/template.R#L43-L44 https://github.com/yihui/knitr/blob/master/man/knit_expand.Rd When I run R CMD check on the package I get this warning (with both R 2.15.2 and R-devel): * checking for code/documentation mismatches ... WARNING Codoc mismatches from documentation object

Hi folks, I am trying to do a clustering and generate a long dendrogram in R on Linux server: ========= data<-read.table(file="mean_ratio.txt.noheader",row.names=1,sep="\t",quote="\"") hc<-hclust(dist(data),"ward") png(file="mean_ratio.txt.noheader.ward.png",bg="white",pointsize=8,width=32767,height=1536) plot(hc,hang=-1)

Hi Yihui, Hi Duncan, I corrected my typo. Unfortunately knitr did not find my plots in the directory where they reside which is different from the Rmd document. The documentation of knitr says: base.dir: (NULL) an absolute directory under which the plots are generate root.dir: (NULL) the root directory when evaluating code chunks; if NULL, the directory of the input document will be used

Hi This appears to be happening (at least) because cairo_pdf() delays initialising a Cairo surface until BM_NewPage(), rather than initiliasing a Cairo surface in BM_Open(), and replayPlot() triggers some activity (set clip region) on the device BEFORE a new page is started (so the pointer to the Cairo surface is null, so BOOM). Not sure yet whether to blame replayPlot() for not starting

I'm not sure why you posted the original note. I quit using SAS in 1991 and haven't needed it yet. Frank RogerJDeAngelis wrote > Sorry about the double post. But I keep getting 'post' rejections, so I > resubmitted about an hour later. ----- Frank Harrell Department of Biostatistics, Vanderbilt University -- View this message in context:

Hello, I am trying to use self created functions in other scripts than the one where they are stored. For the moment I am using the following structure of commands to do that: 1. Load the text file with the functions in the current script: x=parse("path") 2. transform the tex in a function: f1=eval(x[1]), f2=eval(x[2]) if more than one function is stored in the text file 3. use the