# Monthly Archives: December 2010

## Recent developments in the drug war

December 1, 2010
By

The Mexican government recently released data on all crime statistics from January 1997 to October 2010, as reported by the various police forces operating in Mexico. This information provides an unprecedented look at what has happened since the drug war began and allows for a frank assessment of the deterioration of security in Mexico.

## Online Resources for Learning R

December 1, 2010
By

Online classes are an easy and convenient way to learn more about a topic of interest. Not surprisingly, there are a variety of online resources, free and otherwise, to learn more about R. From online graduate classes, to the more “learn at your own pace” approach, here are some resources I have found useful: Programming

## Le Monde puzzle [48]

December 1, 2010
By
$Le Monde puzzle [48]$

This week(end), the Le Monde puzzle can be (re)written as follows (even though it is presented as a graph problem): Given a square 327×327 symmetric matrix A, where each non-diagonal entry is in {1,2,3,4,5} and , does there exist a triplet (i,j,k) such that Solving this problem in R is very easy. We can create

## How to create PDF reports with R

December 1, 2010
By

Sweave is a literate programming system included with R. It makes it possible to create a PDF document containing not just text, but also tables and charts generated from R. The process is automated, so once you've created an Sweave document (which includes both LaTeX text markup and R commands), you can create the formatted text and insert the...

## RcppGSL 0.1.0

December 1, 2010
By

Earlier in the year, Romain and I did a bunch of initial work on a wrapper from R to the GNU GSL by way of our Rcpp package for seamless R and C++ integration. But other work kept us busy and this fell a little to the side. We have now found some t...

## R Workflow: Slides from a Talk at Melbourne R Users (1st Dec 2010)

December 1, 2010
By

I gave a presentation at Melbourne R Userson the topic of R Workflow. The presentation covered R code organisation, and useful R related tools including Eclipse, StatET, Git, make, Sweave and LaTeX. Also, the slides from the presentation provide link...

## bubble chart by using ggplot2

December 1, 2010
By

The visualization represented by Hans Rosling’s TED talk was very impressive. FlowingData provides a tutorial on making bubble chart in R. I prefer ggplot2 for graphics.

## Top 10 things that suck about Sweave

December 1, 2010
By

People rave about Sweave and the literate programing paradigm and I am guilty as charged. I speak Sweave, I think Sweave, I dream Sweave. As a matter of fact my default mode of operation is Sweave and anything else is an … Continue reading →