deck.gl – Large-scale WebGL-powered Data Visualization

New open sourced project by Uber Engineering, for visual exploratory data analysis of large datasets: At Uber, the many GPS points we process every day serves needs across the company. If we have a problem in our platform, we can diagnose it by exploring historical geolocation data. If there’s an accident on the road, we …

TopoJSON

TopoJSON is an extension of GeoJSON that encodes topology. Rather than representing geometries discretely, geometries in TopoJSON files are stitched together from shared line segments called arcs. […] TopoJSON eliminates redundancy, allowing related geometries to be stored efficiently in the same file. For example, the shared boundary between California and Nevada is represented only once, …

Transit Maps – A Technical Follow-Up

Follow-up to the aforementioned Transit Maps: Six weeks ago, we launched Transit Maps, and wrote this blog post about why we took on the mammoth task of creating automatically-generated yet aesthetically-pleasing maps. […] Today, we’re fulfilling our promise to publish a technical follow-up from Anton, our resident mapping wizard, who explains in much greater detail …

Mapping NYC Transit. All of it.

Anthony Denaro: Looking at The Subway Map the thought hit me: If I can transfer to the bus for free, why isn’t there a map that shows where to connect with buses? Why does the system map only show subways? […] The whole system of buses and subways could fit on one map. It could …