{"version":"1.0","type":"rich","title":"d3 Heatmap","description":"This heatmap visualizes cardiovascular disease case counts across ten countries from 2018 to 2023. The SVG rendering uses D3.js version 7, specifically `d3.csv` to load external data and `d3.scaleSequential` with `d3.interpolateReds` to map case numbers to color intensity. Each cell represents a country-year combination, and hovering triggers a custom tooltip with detailed values. The legend shows a low-to-high gradient, while the dataset is sourced from a remote CSV file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/bc236740c842400aa082ab3bc4c698de?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}