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2014
2140

Free Your Android

After all the recent NSA revelations, it's been even more important to use Free Software on our mobile phones. Let me express this in another way: We should be very careful about what software we use on a device that is always on and in our pocket 24h a day. Starting from the very basic thing tha...

2148

Let’s Make a Bubble Map

My previous Let’s Make a Map tutorial describes how to make a basic map with D3 and TopoJSON ; now it’s time to cover thematic mapping in the form of a proportional symbol map. The simplest symbol is a circle, or bubble , whose area is proportional to the associated data. In this tutorial, we’ll make a bubble map of…