{"version":"1.0","type":"rich","title":"21 - interactive filtering - choropleth map - dataviz 2018","description":"This interactive choropleth map displays world countries colored by economy category, with a linked legend that filters the map by category. Users click a country or legend label to select or deselect a category, or click the ocean to clear the selection; non-selected countries fade to 30% opacity. Built with d3.v5, it uses `geoNaturalEarth1` projection and `geoPath` for rendering, `topojson` for world atlas data (from world-atlas npm package), and `scaleOrdinal` with `schemeSpectral` for colors. Zooming is implemented via d3’s `zoom` behavior.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/85798f99081644c5b7ed2ed4ee195514?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}