Serendipity uses information from Spotify to present y'all the locations of 2 Spotify users who are listening to the same rails at the same time. The map shows the locations of 2 users who accept started listening to the same vocal on Spotify inside a 10th of a mo of each other, inwards dissimilar towns, cities, states, nations or timezones.
The affair I most similar well-nigh this application is the role of a stereographic projection. The Web Mercator projection seems to dominion the roost inwards online mapping these days, in addition to thus it is squeamish to run into a dissimilar map projection drib dead a rare outing.
When the map progresses from i paired serendipitous vocal to the adjacent duad of users it animates to a novel map view, which is detail interesting to lookout adult man amongst this stereographic projection. You too drib dead a quick boom of each novel vocal featured equally the map animates closed to the world.
The map was created amongst the assistance of D3.js. If y'all desire to role a stereographic projection inwards your ain maps y'all tin depository fiscal establishment jibe out the D3.js code for this map projection in addition to a demo stereographic projection map here.
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