Bathymetry is the underwater equivalent to topography. And with the right map data, you can make some amazing 3D laser cut maps that feature both land masses — and the details under the sea. [Logan] just learned how to do this, and is sharing his knowledge with us.
[Logan] holds the typical hacker belief: The best way to learn something is just to start the project and figure it out as you go. Which also makes him an excellent candidate for helping others to learn what not to do. His goal of the project was to create a visually stunning map of Vancouver that helps to emphasize the depth of the ocean just off the coast.
To do this he obtained bathymetry data from the Fisheries and Oceans of Canada, and city map data from Open Street Map, a service we’re very familiar with that has provided data for many cool hacks, like this Runner’s GPS unit. The tricky part now is combining the data in order to laser it.