{"version":"1.0","type":"rich","title":"Income level classifications","description":"This interactive choropleth map visualizes World Bank income level classifications for countries, using a purple color scale to show GDP-based categories such as low, lower-middle, upper-middle, and high income. Built with D3 v5 and topojson, it loads geographic and tabular data from `world-atlas`, projects countries with `geoNaturalEarth1` and `geoPath`, and applies a custom legend component. Hovering highlights individual countries, while the legend displays the income categories and their corresponding colors. The map provides a global view of wealth distribution, contrasting with the donut charts from the original article.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/39e4d668f606481b8675f9307292515f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}