{"version":"1.0","type":"rich","title":"D3 Course Code Along - Choropleth Map","description":"A choropleth map colors world countries by income group using a natural Earth projection, with a color legend and zoom interaction. It uses `d3.geoNaturalEarth1` and `d3.geoPath` to render the GeoJSON features, while `d3.scaleOrdinal` and `schemeReds` map categorical values to colors. The legend updates with a transition, and data comes from World Atlas TopoJSON and TSV files. Hovering highlights countries, and mouse-wheel zoom is supported via `d3.zoom`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4b4c6b5c07a44049abc1a53f0f24ebad?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}