1039 search results for "latex"

new R package : highlight

November 22, 2009
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I finally pushed highlight to CRAN, which should be available in a few days. The package uses the information gathered by the parser package to perform syntax highlighting of R code The main function of the package is highlight, which takes a numb...

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Confidence we seek…

November 18, 2009
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Confidence we seek…

Estimating a proportion at first looks elementary. Hail to aymptotics, right? Well, initially it might seem efficient to iuse the fact that . In other words the classical confidence interval relies on the inversion of Wald’s test. A function to ease the computation is the following (not really needed!). waldci<- function(x,n,level){ phat<-sum(x)/n results<-phat + c(-1,1)*qnorm(1-level/2)*sqrt(phat*(1-phat)/n) print(results) } An exact confidence interval is

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Create Animations in PDF Documents Using R

November 11, 2009
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ince animation 1.0-9, we will be able to create a PDF document with an animation embedded in it; the function is saveLatex(), and its usage is similar to saveMovie() and saveSWF(): you pass an R expression for creating animations to this function, and this expression will be evaluated in the function; the image frames get

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Show me the mean(ing)…

November 5, 2009
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Show me the mean(ing)…

Well testing a bunch of samples for the largest population mean isn’t that common yet a simple test is at hand. Under the obvious title “The rank sum maximum test for the largest K population means” the test relies on the calculation of the sum of ranks under the combined sample of size , where

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A primer to Sweave with LyX

October 24, 2009
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This is a step-by-step guide to 'Sweave' a document in R with Lyx on Ubuntu (9.04).System: Ubuntu 9.04, LyX 1.6.2, R 2.11.0 (Development version, r50178)Install LyX with Synaptic if it is not installed yet. (Current version 1.6.2)Start LyX, go to menu ...

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Some Interesting Packages in R: swfDevice, RGoogleTrends, FlashMXML, SVGAnnotation

October 19, 2009
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I love R because there are always exciting new packages which can be far beyond your imagination. Here I’d like to introduce a couple of packages that look really awesome: 1. swfDevice: R graphics device for SWF output (by Cameron Bracken) This package is still at a pre-alpha stage but you can see a sketch now in

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Comments on the "R Clinic"

October 19, 2009
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Comments on the "R Clinic"

Theresa Scott runs an R Clinic at Vanderbilt. Researchers bring their questions along to weekly sessions and some answers are posted on this website.  It's great to see the combination of statistical consulting services and public posting of answe...

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The optimal way to do sweave

October 16, 2009
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The optimal way to do sweave

The optimal way to do sweave may be to have a master file in LaTeX, and a separate Rnw file contains all the computations, figures, and tables. That way, it is easy to compile the LaTeX as the writing goes on without the hassle of carrying out the comp...

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Welcome to Sigmafield

September 20, 2009
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Edit: This post originally appeared on my Wordpress blog on September 20, 2009. I present it here in its original form. John Tukey's preface to Exploratory Data Analysis begins with a useful rule, "It is important to understand what you can...

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Welcome to Blogistic Reflections! (A blog created entirely in Emacs org-mode)

September 19, 2009
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Welcome to Blogistic Reflections! (A blog created entirely in Emacs org-mode)

John Tukey’s preface to Exploratory Data Analysis begins with a useful rule, “It is important to understand what you can do before you learn to measure how well you seem to have done it.” When I decided I wanted to start a blog concentrating on statistics, R, and Emacs, I thought I had better learn

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