I've uploaded version 0.2-1 of my bibtex package to CRAN. This release anticipates changes in R 2.12.0, and structures bibtex entries in object of the new class bibentry. The release also fixes various parser and lexer bugs
Monthly Archives: July 2010
Creating a Presentation with LaTeX Beamer – Bullet Lists
When writing a presentation we might want to use a bullet list to highlight some key points that might be lost if they are part of a large body of text. We can use the standard LaTeX environments for creating lists within a beamer presentation in a straightforward way. Fast Tube by Casper The bullet lists can
Visualizing the census
Now that the 2010 survey is over, you might be wondering what we can learn from the data when the aggregated results are published. For a good guide to the kinds of questions you'll be able to answer, take a look at StatJump, where you can see tables and charts of the results of the 2000 census: population data...
R and Oracle HR Part II – Plotting a single variable
If you have not done so already, make sure you have R and Oracle setup as described in the previous article. If so, you should be able to create a connection from R and list the tables that are available in the HR schema.library('RODBC')ch <-o...
Les estivales 2010
Les estivales 2010 ont commencées à montpellier.
Chatfield’s Plots in S-Plus
I have recently finished reading the sixth edition of The Analysis of Time Series: An Introduction by Chatfield in our Statistics reading group. Whilst enjoying most of the book I got a little confused when looking at Appendix D: Some … Continue reading →
Funny Math in Governor Approval Ratings
Andrew Gelman wrote today about some erroneous U.S. Governor approval ratings, noting that the ratings for Janet Napolitano sum to 108%. In fact most of these ratings do not sum to 100%. I prepared a clean CSV file of the ratings, making use of R‘s XML library and the readHTMLTable function. The ratings data file
World Bank data plots
Couple of weeks ago, I was looking for interesting data sets to play with using R. I came across this post and got inspired to use World Bank data to extract interesting patterns/facts about developing countries. World Bank has 300+ World Development i...
100 Prisoners, 100 lines of code
In math and economics, there is a long, proud history of placing imaginary prisoners into nasty, complicated scenarios. We have, of course, the classic Prisoner’s Dilemma, as well as 100 prisoners and a light bulb. Add to that list the focus of this post, 100 prisoners and 100 boxes. In this game, the warden places
TripleR/ BlockR: Working on mixed effect models …
At the moment I’m working on the implementation of full block designs (e.g., every member of group A rates each member from group and vice versa. A typical example is speed dating: every man rates each woman and vice versa). These designs can be analyzed with mixed effect models, and now I’m a bit confused 
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
