{"version":"1.0","type":"rich","title":"Country-Japan","description":"This example visualizes a simplified map of Japan using a Mercator projection. A slider controls the level of topological simplification, filtering out geographic features based on a triangle-area threshold computed with `topojson.presimplify`. The map is rendered as an SVG path using `d3.geoPath` with a custom `d3.geoTransform` stream that converts simplified coordinates to pixel positions via `projection.fitExtent`. The code redraws the map on slider input and window resize events.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9e2f1474a18746d98d67e8c62d5e2a13?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}