{"version":"1.0","type":"rich","title":"Choropleth Map","description":"A choropleth map colors world countries by economic classification using a sequential ordinal scale and the Spectral color scheme. The visualization, built with D3 v5 and TopoJSON, renders countries as SVG paths via d3.geoPath with a Natural Earth projection, supporting zoom and pan. A custom color legend displays the categorical color scale, while country data is joined from the World Atlas TopoJSON and TSV datasets using Promises.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b40482668ae1423ea5db85de1449cf94?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}