{"version":"1.0","type":"rich","title":"choropleth map","description":"A choropleth map visualizes global economic classifications by country, with each nation filled according to its assigned category from a ordinal color scale. Users can click legend entries to filter the map, highlighting matching countries while dimming others to 20% opacity; clicking the same legend entry again removes the filter. The map uses an SVG renderer with the d3-geo-projection Van Der Grinten IV projection, and employs d3-geoPath for path generation and d3.zoom for pan and zoom interactions. Data comes from the world-atlas TopoJSON dataset, merged with TSV metadata for country properties.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d59f130a2e894f85ae38db6cc26afc35?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}