Last week we had a look at drawing contour lines using the Google Maps Elevation API. Because of restrictions on what you are allowed to do with Google’s elevation data, we chose not to create KML ...

In yet another move to map every inch of the world, Google on Wednesday announced the addition of contour lines to their terrain view, an optional layer of Google Maps. The concept, the brain child of ...

Thank you to GEB reader ‘DJ’ for suggesting this idea in the comments of our post on simulating lakes. It turns out that the algorithm for drawing contours given a regular array of altitude data is ...