sweave

How can a source d or Sweave d file find out its own path? Background: I work a lot with .R scripts or .Rnw files. My projects are organized in a directory structure, but the path of the project's base directory frequently varies between different computers (e.g. because I just do parts of data analysis for someone else, and their directory structure is different from mine: I have projects base directories ~/Projects/StudentName/ or ~/Projects/Studentname/Projectname and most students who have just their one Project usually have it under ~/Measurements/ or ~/DataAnalysis/ or something the like

Is there a way to avoid the function round() when using Sweave/knitr? It's really annoying to write round(,2) in every \Sexpr{} . I would like to have two decimal places through the whole document. Thanks for your help Macs If you have read the motivation of the knitr package , you probably know I'm the person who hates round() inside \Sexpr{} most. I suggested this to R core long time ago for Sweave but it was ignored, so I started my own package. Although the answer by Josh O'Brien is absolutely correct, I should say you really only need options(digits = 2) with knitr , and there is no need

There are a range of tools available for creating publication quality tables using R, Sweave, and LaTeX. In particular, there are helper functions like latex in the Hmisc package, and xtable in the xtable package. I've also often written my own code so that I could have complete control over table formatting (e.g., see this example ). However, when preparing publication quality tables a range of issues often arise: how and when to apply numeric formatting how to precisely control alignment of columns and cells how to precisely control cell borders how to convert variable labels to variable

I wonder if there is any function to put line numbers with knitr in .Rnw . I found this discussion and some documents (now removed from the web) but could not find the way to put line numbers. This solution uses the LaTeX listings package to create line numbers. I can only get them to work by accumulating across all code chunks, but I imagine there is a similar solution that will enumerate lines only within each chunk. Here's the .Rnw source: \documentclass{article} \usepackage{listings} \begin{document} <<setup, echo=FALSE>>= knit_hooks$set(source = function(x, options) { paste("\\begin

Suppose I have an object x in my current session: x <- 1 How can I use this object in an Sweave or knitr document, without having to assign it explicitly: \documentclass{article} \begin{document} <<>>= print(x) @ \end{document} Reason I am asking is because I want to write an R script that imports data and then produces a report for each subject using an Sweave template. I think it just works. If your Sweave file is named "temp.Rnw", just run > x <- 5 > Sweave("temp.Rnw") You'll have to worry about naming the resulting output properly so each report doesn't get overwritten. I would take a

I analyze measurements from many cities (hundreds), and need to create separate reports per city (in Adobe pdf-format). My process is like this: First RStudio to prepare the data to be shown, saved in X.Rda. In X.Rnw (RStudio) I read X.Rda, select one city, and produce the tables and plots. In RStudio I press "Compile PDF" and the city-report X.pdf is produced. I go to step 2, choose another city, and so on. This is very tedious, and looks perfect for a for-loop per city, but how can it be done? Thank you r-contributors! /Chris Yihui Xie You can use something like a for loop with a global