{"version":"1.0","type":"rich","title":"Heatmap in D3","description":"This heatmap visualizes monthly COVID-19 cases across Scandinavian countries for 2020, using a blue sequential color scale to encode case counts per country-month combination. The SVG chart, built with D3 v7, reads CSV data from a GitHub gist and renders axes, labels, and tooltips. It uses `d3.scaleBand` for positioning, `d3.scaleSequential` with `d3.interpolateBlues` for coloring, and the d3-legend plugin for the color legend.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3084d8fe4e904b4a91d917157ea2d9ee?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}