{"version":"1.0","type":"rich","title":"Duration Heat Map","description":"This heat map visualizes the duration of events across months and days, using color intensity to reveal patterns. The code fetches a remote text dataset, loads D3 v5 from UNPKG, and renders the graphic with SVG. It builds the chart using `d3.scaleBand` for axes, `d3.scaleSequential` with an interpolateBlues color scale, and adds interactive tooltips. Axes, labels, and a color legend are included, all authored as plain D3 code.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/da7895ec65e24e879406a788466ea183?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}