{"version":"1.0","type":"rich","title":"Easy earthquakes","description":"A sequence of earthquakes is animated as expanding red circles on a world map, with each circle's final size proportional to its magnitude. The visualization first renders country borders from CartoDB's `d3_world_borders` table using `d3.geo.mercator` and `d3.geo.path`, then queries earthquake data via `cartodb.SQL` and plays them in chronological order. Each quake circle grows over two seconds via D3 transitions, fading out before the next appears, while `d3.behavior.zoom` allows pan and zoom on the SVG.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-4455569?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}