{"version":"1.0","type":"rich","title":"Cheap Tricks for Interaction","description":"This example demonstrates interactive annotation on a natural Earth projection world map. Clicking anywhere places a scaled pointer marker that fades in via a D3 transition, while holding Ctrl and clicking a marker removes it. The map is rendered from TopoJSON world-atlas data using `d3.geoPath`, with pan and zoom handled by `d3.zoom`. The pointer shape is defined as an SVG symbol, and mouse events rely on `d3.event` and `d3.mouse`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/41490b502e2f4eee80643f46dfdc9811?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}