{"version":"1.0","type":"rich","title":"Toggle topojson Layers (reload file)","description":"This example demonstrates a map of world countries that can be toggled between different TopoJSON layers, with the ability to reload the file. Built with D3 v4 and rendered as SVG, it loads geographic data from countries.json and displays it using a custom projection. The visualization uses a button to re-fetch and re-render the TopoJSON data, allowing users to refresh the map layers dynamically.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-18c99da4ea475797738b6c7e62fb1639?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}