{"version":"1.0","type":"rich","title":"Choropleth map with D3.js!","description":"This choropleth map visualizes world countries colored by income group using D3.js. The map uses a natural Earth projection via `d3.geoPath` and `geoNaturalEarth1`, with country boundaries loaded from TopoJSON world-atlas data and income classifications joined from a TSV file. A color legend built with `scaleOrdinal` and `schemeSpectral` displays the categorical color scale. Interactive zooming is implemented through `d3.zoom`, and hovering over a country highlights it in red while a tooltip reveals its name and income group.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/31a6522159a74ce986ede604a584047f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}