{"version":"1.0","type":"rich","title":"Gist a81c267615bde4d028ee","description":"This visualization shows the geographic distribution of alternative fuel stations as of April 4, 2012, using a temporal heat map. The CartoDB Torque library animates the points over ten seconds, aggregating station counts per cell with a linear data aggregation function. The code applies a `colorize-alpha` image filter to markers, transitioning from red through blue based on density, while frame offsets increase marker width and reduce opacity to create a motion trail effect. The map uses static marker images from an Amazon S3 asset and relies on Torque’s time-based rendering to reveal spatial clustering over time.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-a81c267615bde4d028ee?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}