Cheap Tricks for Interaction

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Cheap Tricks for Interaction

✓ Published1🌍 Public

Last edited Jan 30, 2020

Created on Jan 29, 2020

This example shows a zoomable natural Earth projection map where hovering over any country turns it crimson. The visualization loads world country boundaries from a TopoJSON file via d3.json, then renders them as SVG paths using d3.geoPath and d3.geoNaturalEarth1. Interaction comes from d3.zoom, which applies a transform to a group element, while CSS :hover rules change country fill colors. The map also includes a blue sphere backdrop drawn from a GeoJSON sphere object.

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MIT Licensed

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