{"version":"1.0","type":"rich","title":"Choropleth map of income group with interactive filtering","description":"This interactive choropleth map displays global income groups using a YlGn color scale, with each country colored according to its income classification. Users can click legend items to filter the map, dimming non-selected countries to 20% opacity while highlighting the chosen income group. Built with D3 v5, the visualization combines geoNaturalEarth1 projection with geoPath for country rendering, loads data from world-atlas TopoJSON and TSV files, and implements zoom functionality through d3-zoom's event transform. Hovering reveals country names and income values via title tooltips.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/54306e82a03e4c18b152cfa617c9b34f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}