I came across an interesting data visualizer. Urbmet.org doesn’t use processing but it uses mostly open source software. The creators analyzed 42 cities and their estimated material and energy intensities. You can go to the web-map, type in one of these cities, and be given data that reflects material and energy use per person or per household as well as population density. The material data reflects buildings and infrastructure. The energy data reflects transportation, electricity and gas use. The information is illustrated with different colors which correspond to a key on the side of the screen. This interactive tool was created to study urban spatial patterns that are related to material and energy use.