Many people who read this blog will be familiar with Karim Douïeb's fantastic 'transition between surface area of US counties and th...

In one of my many 'playing around with map stuff and then posting it on twitter' adventures, I recently posted a kind of comet map -...

This post is about how to create video animations from a sequence of individual images, using a simple but extremely powerful command line t...

If you search online for 'world population by latitude' you'll quickly find quite a few results, including the great analysis by...