Serendipity uses information from Spotify to exhibit y'all the locations of ii Spotify users who are listening to the same rail at the same time. The map shows the locations of ii users who bring started listening to the same vocal on Spotify inside a 10th of a 2nd of each other, inward dissimilar towns, cities, states, nations or timezones.
The matter I most similar well-nigh this application is the role of a stereographic projection. The Web Mercator projection seems to dominion the roost inward online mapping these days, as well as thus it is overnice to run across a dissimilar map projection become a rare outing.
When the map progresses from 1 paired serendipitous vocal to the adjacent span of users it animates to a novel map view, which is detail interesting to spotter amongst this stereographic projection. You besides become a quick nail of each novel vocal featured equally the map animates roughly the world.
The map was created amongst the handle of D3.js. If y'all desire to role a stereographic projection inward your ain maps y'all tin banking concern gibe out the D3.js code for this map projection as well as a demo stereographic projection map here.
