Once again working on my slides for the AMSI Lecture 2012 tour, it took me a while to get the following LaTeX code (about the family reunion puzzle) to work: \begin{frame}[fragile,label=notleM2] \slidetitle{A family meeting} \begin{block}{Random switch of couples} \only{ \begin{itemize} \item Pick two ... [Read more...]

This is (roughly) the lightning talk I gave in useR2011. If you are a reader of R-bloggers.com then this talk is not likely to tell you anything new. However, if you have a friend, college or student who is a new useRs of R, this talk will offer him ... [Read more...]

These days one can frequently read about wordclouds created with R, initiated by the release of the wordcloud package by Ian Fellows on July 23rd. So here I am to put in my two cents. I thought about creating a wordcloud of a complete blog history, so I build a ... [Read more...]

If your WordPress blog is hosted at WordPress.com (like this one), you may know that source code in posts is formatted and highlighted using a shortcode, as explained here. Until recently, R was not on the list of supported languages (neither was Perl), but I noticed today that both ... [Read more...]

Julien just signaled an intermitent disappearance of the posts on the ‘Og, depending on the operating system: Ubuntu 10.10 seems to be working (most of the time!) while Mac and Windows are having problems… This is beyond my abilities, I have contacted WordPress support, maybe they are working on some new ... [Read more...]

First of all, welcome to my blog! I will write posts about trading, quantitative and algorithmic trading, programming and everything else what is on my mind. Feel free to comment and give suggestions how to improve this blog. Thank you! Well, one of th... [Read more...]

Ladies and gentlemen, waiting is finally over. I'm proud to introduce Rumpel! [Read more...]

About 10 months ago, I was looking for a plugin to enable me to highlight R code on my self hosted WordPress blog. The solution I came up with then was to use the wp-syntax plugin (with the need for some modifications). Today I was informed of (what I believe is) ... [Read more...]

Tal Galili’s blog post mentioned that WP-Syntax can highlight R codes. I downloaded the modified version of WP-Syntax in his blog site. The plugin throw an error when activated. I did not try the original version hosted in Wordpress. I found that WP-CodeBox use GeShi for syntax highlighting as ... [Read more...]

Announcing the ability to highlight R syntax in WordPress.com blogs, thanks to the recent work of Yihui Xie, Yoav Farhi and Andrew Redd. [Read more...]

At the useR!2010 conference I had the honor of giving a (~15 minute) talk titled “Blogging about R”. The following is the abstract I submited, followed by the slides of the talk and the audio file of a recording I made of the talk (I am sad it got a bit ... [Read more...]

Although the revision is quite minor, it took us two months to complete from the time I received the news in the Atlanta airport lounge… The vanilla Rao-Blackwellisation paper with Randal Douc has thus been resubmitted to the Annals of Statistics. And rearXived. The only significant change is the inclusion ... [Read more...]

Download link for WP-Syntax plugin (with GeSHi version 1.0.8.6) In case you have a self hosted Wordpress blog, and you wish to show your R code in it, how would you do it? The simplest solution would be to just paste the code as plain text, which will look like this: ... [Read more...]

A few people have emailed me and enquired about the use of tools mentioned at the end of this post to make blogposts with embedded R-commands. Below is a small step-by-step walkthrough of how to accomplish this. Write your blog post in a simple tex... [Read more...]

I guess this is not the number one post I would like to start with on this blog, but I feel the time is right for it (community-wise). I’ll move on to the subject matter in a moment, but first a short intro: This blog is written by Tal ... [Read more...]

ag cloud is a bunch of words drawn in a graph with their sizes proportional to their frequency; it’s widely used in blogs to visualize tags. We can observe important words quickly from a tag cloud, as they often appear in large fontsize. Tony N. Brown asked how to “... [Read more...]