Archive for tag: map

Gun murders in America

29 December, 2012 (10:40) | charts, d3, data visualization | By: jerome

Click for interactive visualization I have created this map of every homicide in the USA using firearms for the latest year where detailed information was available. Every, that is from all the agencies that report homicides to the FBI, which is not an obligation – this is why the map lacks Florida data. In the [...]

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 [...]

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 [...]