{"version":"1.0","type":"rich","title":"D3 Course Code Along - Choropleth Map with Clickable Legend","description":"This choropleth map colors countries by income group using a categorical color scale. A clickable legend filters the map, dimming unselected categories to 10% opacity while highlighting the chosen group. Built with D3 v5, it uses d3.geoPath with a d3.geoNaturalEarth1 projection to render country boundaries from TopoJSON data. The visualization also incorporates d3.zoom for interactive panning and zooming, and animates the legend’s color transitions with d3.transition.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5b118306b288419ea6f84bbf53d0acb0?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}