{"version":"1.0","type":"rich","title":"Fork of Volcano","description":"This interactive visualization animates contour lines of the volcano dataset, showing a smooth morphing effect as the contour thresholds transition between successive intervals. The display uses a plasma color scale to differentiate elevation bands, with white strokes delineating each path.\n\nThe code constructs GeoJSON MultiPolygons from the gridded `volcano.json` data using `d3.contours` and projects them with `d3.geoNaturalEarth1` and `d3.geoPath`. A continuous loop drives a `transition` of 2000ms duration, interpolating threshold values and updating both the path shapes and fill colors to create a perpetual pulsing animation.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0dd8bcbbdcf24f3dbe0ab859848b0324?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}