The European Petroleum Survey Group (EPSG) is a noble scientific organisation with heavy ties to the European petroleum industry.Or at least, it used to be. It was absorbed by IOGP (International Asso...Read More

The Earth is three dimensional, and maps are flat. How do you take a three dimensional Earth and put it on a flat surface? It’s difficult!Ideally we wouldn’t have to use maps because we’d ...Read More

Machine learning can be split up into many subfields. One of these subfields growing in relevance is reinforcement learning.One of the core problems in reinforcement learning is the multi-armed bandit...Read More

I’ve written a decent amount of material about force directed graphs. This included posts for each of the forces that the d3-force module comes shipped with.I found that when I read about these ...Read More

You probably hear a lot of talk about “spatial data”. Not as much as about BIG DATA, or as about DEEP LEARNING, but enough so that if you clicked here, you’re just a little bit curio...Read More

There is something called the maximum subarray problem, and it goes something like this.You are given an array of numbers: something like 3,5,-2,-1,5,3,1,-4,-6,5. Your job is to come up with the sub...Read More

Pretend you wish to get an idea of the average value of your dataset. You’ve got a few choices available to you, of which the most common three are the mean, median and mode.You might argue that...Read More