Here I demonstrate a simple way to code Conway's game of life (GoL) in R and to produce the animation above. Cellular automata in R are usually painfully slow if you iterate through all grid cells in an array. A…Read more →

I was wondering about the null distribution of successive differences of random sequences, and decided to do some numerical experiments. I quickly realized that successive differences equates to taking successively higher-order numerical derivatives, ...

In part inspired by the chart described in The electoral map sans the map, I thought I’d start mulling over a quick sketch showing the race to the 2012 Formula One Drivers’ Championship. The chart needs to show tension somehow, so in this first really quick and simple rough sketch, you really do have to

I am working on a project with the Rizzo Lab examining the dynamics of Sudden Oak Death (SOD). I really have to write more about this, but today I’m just going to post the results of an initial exercise. Here I attempt to replicate model results from Cobb et al. (2012). The model in that paper simulates...

Data visualizations are useful for exploratory work and as an aid in communicating findings. Data visualizations also seem to be in demand these days as a kind of eye candy for capturing attention. But when we look at one engaging enough to hold our attention, we want to know what it means. In other words,

I like to explore the graphics features of R. Base graphics, ggplot2 are my favourites. On other graphics packages, I haven’t used plotrix much. I am currently exploring grid package. Raptor First one is using ggplot2. (you could also do … Continue reading →The post Fun with R graphics: A raptor and a cake appeared first on...

In my last post about how a twitter conversation unfolds in time on Twitter, the dynamical nature of information diffusion in twitter was illustrated with a video of the temporal network of interactions (RTs) between accounts. The temporal evolution of … Continue reading → Related posts: Temporal network of information diffusion...

The Washington Post has an interactive graphic showing the rate at which the US presidential candidates Barack Obama and Mitt Romney have visited the various states for campaign rallies and fundraisers. Here's how it looks today: You can clearly see the focus on key swing states like Florida and Ohio, as well as non-competitive (but donor-rich) states like California...