Lights at Sea — A map of Lighthouses

This map shows all the blinking beacons from OpenStreetMap. More specifically, it asks the Overpass API for all elements with an seamark:light:sequence attribute, decodes these, and displays them as coloured circles on the map using Leaflet. It also tries to take the seamark:light:range and seamark:light:colour into account. The cool part is that the size and …

Efficient Distance Querying in MySQL

Aaron Francis looks into querying MySQL with a ST_Distance_Sphere clause — a function to calculate the linear distance in meters between two lon/lat points — in an efficient way. There’s a few things he does there: No unnecessary calculations in WHERE clauses Pre-limiting the set by applying a bounding box Leveraging Generated Columns Using a …

Google Maps JavaScript API WebGL

I’m a huge mapping nerd, so I’m a sucker for the Maps JavaScript API WebGL beta which was announced at Google I/O back in May: Introduced are three new features: WebGL Overlay View lets you add custom 2D and 3D graphics and animated content to your maps. Tilt and heading can now be adjusted programmatically, …

Launching the Facebook Map

Jodah Adkins from Stamen Design: For the past year and a half, it’s been our privilege to work on one of our largest and most ambitious undertakings ever: collaborating closely with a team of Facebook engineers, designers, and data experts to roll out a global, multi-scale base map for all of Facebook’s billions of users. …

Unfolded Studio — Geospatial Data Reinvented

A geospatial analytics platform for data unification, enrichment, and visualization. It’s built on top of the aforementioned deck.gl and Kepler.gl Unfolded Studio →Unfolded Studio Example: All Public Transport stops in Germany → Sidenote: By the looks of it, the open-source Kepler.gl is doing the heavy lifting there.

The Spilhaus “World Ocean Map in a Square“ Projection

Coming to the next version of ArcGIS is the “Spilhaus projection”: In September and October of 2018, three maps went viral on social media and the web. All of them had the same perspective, featured oceans as the main focus, and presented the oceans as one body of water. The maps were based on the …

Mapbox Landsat-live

Today we’re releasing the first edition of Landsat-live, a map that is constantly refreshed with the latest satellite imagery from NASA’s Landsat 8 satellite. With every pixel captured within the past 32 days, Landsat-live features the freshest imagery possible around the entire planet. Uses the Landsat 8 data directly now that it’s stored on AWS. …