{"version":"1.0","type":"rich","title":"Choropleth map","description":"A choropleth map colors countries by income group using a categorical color scale, with a hover effect that turns each country red and a tooltip showing the country name and income group. The visualization loads geographic data from the World Atlas TopoJSON and TSV files, processes it with `topojson.feature` and `d3.tsv`, and projects it using `d3.geoNaturalEarth1` and `d3.geoPath`. A custom legend built with `d3.scaleOrdinal` and `schemeSpectral` renders interactive color swatches, while `d3.zoom` enables panning and zooming on the SVG map.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6ab6453305744a209d5c430439758620?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}