Archive for month: March, 2011

datavizchallenge.org: my entry

27 March, 2011 (16:03) | data visualization, protovis | By: jerome

I just posted my www.datavizchallenge.org entry! So here’s a little explanation about what I’ve done, how and why. The idea behind the data provider web site, WhatWePayFor, is that billions and millions don’t talk to the average citizen. This doesn’t help them understand where their money goes. And in my work, I generally try to […]

Building the France Dorling cartogram

27 March, 2011 (14:28) | data visualization, protovis | By: jerome

This is a follow-up to the previous post where I used a Dorling cartogram to show election results in France. So how did I come up with that? Step 1: the data Without data, there wouldn’t be much to plot, right? So the first order of business was to fetch the data, which is theoretically […]

La carte des cantonales

26 March, 2011 (21:05) | data visualization, protovis | By: jerome

[I write this here post in French because it's more relevant for a French audience, a more technical post with an explanation of how it's done follows in English]. J'ai écrit que j'avais été déçu par les infographies des principaux médias au lendemain des cantonales. Si on prend la carte du Monde par exemple, on […]

More fun with arrays in protovis

15 March, 2011 (18:21) | protovis | By: jerome

In my short tutorial on working with data and protovis I briefly covered some standard javascript and protovis methods to work with arrays. The more I work with Protovis, the more I am convinced that efficient array manipulation is key to achieving just about anything with the library. So, I would like to go into […]

Protovis: analysis of the Map projections example

15 March, 2011 (18:17) | data visualization, protovis | By: jerome

What is a map? before we start looking at the code it may be a good idea to think of the best way to represent a country. Countries are areas of land surrounded by borders, which are imaginary (or sometimes physical) lines going through a set of points. Some countries are made of one of […]

Stuff I do with Tableau

14 March, 2011 (19:01) | charts, data visualization | By: jerome

I put together a list of some of the things I’ve done with Tableau public there. I had put the link on twitter last Friday, and I just saw the number of connections through bit.ly – never thought something posted just before the week-end could get so much attention! so thanks, twitter followers. I’m putting […]

The semi-marathon of Paris 2011

7 March, 2011 (20:09) | Uncategorized | By: jerome

This post is a tribute to my friends who ran this Sunday. If I had known in advance, I would surely had joined you guys, or found a better excuse not to. Anyway, about 30,000 people tried to finish the semi-marathon, and 23764 did (plotted below).