{"version":"1.0","type":"rich","title":"Choropleth map","description":"This choropleth map visualizes total COVID-19 cases by country, using a spectral color scale to encode case counts on a natural Earth projection. The map supports pan and zoom via d3.zoom, with tooltips showing country names and case values. It renders with d3.geoPath and TopoJSON world data, while a custom color legend built with D3 scales displays the ordinal color mapping. The data is loaded from a TSV file joined to country geometries.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/bce396e820f143acb2941ba3419e8b4f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}