{"version":"1.0","type":"rich","title":"Choropleth map with Interactive clicking","description":"A choropleth map of world countries colored by income group, with an interactive legend that filters and highlights selected categories. The map uses a Natural Earth projection via `d3.geoPath` and `d3.geoNaturalEarth1`, rendered as SVG paths from TopoJSON world-atlas data. Clicking a legend tick toggles a color value, reducing opacity of non-matching countries and dimming the globe sphere. Zooming via `d3.zoom` and `d3.event` allows pan and scale; the legend is built with ordinal `d3.scaleOrdinal` and the `schemeSpectral` color scheme.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/be8c184ac7d1479198333b01e28fac13?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}