{"version":"1.0","type":"rich","title":"Old Faithful Contour Plot","description":"This contour plot visualizes the Old Faithful dataset, showing the density of eruptions against waiting times as a smooth gradient of green-filled polygons. The code uses d3-contour’s `d3.contourDensity` to compute density estimates from the scatter data, and d3-scale-chromatic’s `interpolateGreens` for the sequential color scale. SVG rendering via D3 v4 draws the contours with `d3.geoPath`. An interactive mouse move adjusts the bandwidth of the density estimation from zero to forty, updating the plot in real time.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/65a26f760f5b4d3f976d1cd7cb43a221?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}