Fork of Japan Country

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Fork of Japan Country

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Last edited Mar 29, 2023

Created on Mar 29, 2023

This interactive map displays a simplified, green-colored rendering of Japan with yellow borders. A slider controls the level of topographic simplification, filtering out smaller details as the threshold increases. Built with D3.js v4 and TopoJSON, the visualization uses a custom `d3.geoTransform` pipeline to convert GeoJSON features into SVG paths. The `presimplify` function and a user-adjustable threshold dynamically alter the geometry’s complexity, with the map redrawing on input or window resize using the `d3.geoPath` projection. Data originates from a remote TopoJSON file hosted on GitHub.

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