# Posts Tagged ‘ rstats ’

## The essence of a handwritten digit

August 13, 2012
By

If you haven’t yet discovered the competitive machine learning site kaggle.com, please do so now. I’ll wait. Great – so, you checked it out, fell in love and have made it back. I recently downloaded the data for the getting started competition. It consists of 42000 labelled images (28×28) of hand written digits 0-9. The

## What have I been doing all these years?!

August 11, 2012
By

In which Mo Farah et al show James that he's got a nasty heel-strike

## Simulation: The modeller’s laboratory

August 10, 2012
By

In his 2004 paper in Trends in Ecology and Evolution, Steven Peck argues: Simulation models can be used to mimic complex systems, but unlike nature, can be manipulated in ways that would be impossible, too costly or unethical to do in natural systems. Simulation can add to theory development and testing, can offer hypotheses about the

## Creating Olympic Medal Treemap Visualisations Using OTS R Libraries

August 7, 2012
By

In London Olympics 2012 Medal Tables At A Glance? I posted some treemap visualisations of the Olympics medal tables generated using a Google Visualisation Chart treemap component. I thought it might be worth posting a quick R generated example too, using the off-the-shelf/straight out of CRAN treemap component. (If you want to play along, download

## At A Glance View of the 2012 Olympics Heptathlon Performances

August 4, 2012
By

I spent most of today, err, yesterday, failing to hold back the tears as the medal performances from the Team GB Olympians kept rolling in… So to celebrate one of those wonderful performances, here are a couple of quick sketches of how Jessica Ennis made her medal in the Heptathlon. (The data is cut and

## Olympic body match and 1:1 BMI

August 1, 2012
By

In my morning attempt to read the whole internet before beginning work, I came across a program on the BBC website which allows you to see which Olympic athletes are your body doubles. Or rather, which athletes share your height and weight, and therefore your body mass index. Being a Canadian, I exist in an

## Dynamical systems: Mapping chaos with R

July 13, 2012
By
$Dynamical systems: Mapping chaos with R$

Chaos. Hectic, seemingly unpredictable, complex dynamics. In a word: fun. I usually stick to the warm and fuzzy world of stochasticity and probability distributions, but this post will be (almost) entirely devoid of randomness. While chaotic dynamics are entirely deterministic, their sensitivity to initial conditions can trick the observer into seeing iid. In ecology, chaotic

## Fumblings with Ranked Likert Scale Data in R

July 9, 2012
By

The code is horrible and the visualisations quite possibly misleading, but I’m dead tired and there are a couple of tricks in the following R code that I want to remember, so here’s a contrived bit of fumbling with some data of the form: enjoyCompany tooMuchFamily 1 strongly agree strongly disagree 2 strongly agree strongly

## Interest Differencing: Folk Commonly Followed by Tweeting MPs of Different Parties

July 6, 2012
By

Earlier this year I doodled a recipe for comparing the folk commonly followed by users of a couple of BBC programme hashtags (Social Media Interest Maps of Newsnight and BBCQT Twitterers). Prompted in part by a tweet from Michael [email protected] about generating an ESP map for UK politicians (something I’ve also doodled before – Sketching