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Flat-Polar Quartic

✓ Published0🌍 Public
Mmbostock
Last edited Feb 27, 2019
Created on Jan 6, 2013

This example displays a world map projected using the flat-polar quartic projection, which flattens the poles into curved, diamond-like shapes. The map shows landmasses in dark gray with country boundaries in white, overlaid on a graticule grid and enclosed by a circular sphere outline. It uses D3 v3 with the `d3.geo.mtFlatPolarQuartic` projection, `d3.geo.path` for rendering SVG paths, and TopoJSON to load world-50m geographic data. A graticule layer is generated via `d3.geo.graticule`, and the sphere outline is reused as both stroke and fill.

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gpl-3.0 Licensed

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