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Rotating Transverse

✓ Published0🌍 Public
Mmbostock
Last edited Feb 9, 2016
Created on Jun 7, 2013

Two animated map projections rotate in sync on a single canvas: a transverse equirectangular (Cassini) projection on the left and a transverse Mercator on the right. Each frame, `d3.geo.equirectangular` and `d3.geo.mercator` recompute their rotation via `d3.timer`, while `d3.geo.path` renders land from TopoJSON world-110m data and a graticule. The canvas context is manually rotated by 90 degrees to align the transverse orientation.

AI-generated description

A rotating Cassini projection (transverse equirectangular) on the left; a rotating transverse Mercator projection on the right.

gpl-3.0 Licensed

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