{"version":"1.0","type":"rich","title":"A9 -  World Choropleth Map","description":"This example shows a world choropleth map of 2021 GDP values by country, with darker blue shading representing higher GDP. A tooltip displays the country name and GDP on mouseover, while a horizontal color legend encodes the scale. The visualization uses a geographic projection via `d3.geoMercator` and `d3.geoPath` to render GeoJSON features, with color mapping through `d3.scaleSequential` and `d3.interpolateBlues`. GDP data is loaded from a CSV using `d3.csv`, and the legend is built with the `d3-legend` library.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/a61d17b598f0416f880e5f28ecf24292?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}