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Cheap Tricks for Interaction

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SShahAlvi
Last edited Jun 11, 2020
Created on Jun 11, 2020

This example demonstrates interaction with geographic data by rendering a polygon of the British Columbia region and highlighting countries on hover. Using D3 v5, the code loads geographic data from a JSON file and projects it with `d3.geoMercator` and `d3.geoPath`. The SVG output changes fill color on mouseover via CSS hover rules, while a linked YouTube video explains the underlying interaction techniques. The visualization combines static map rendering with simple, CSS-based interactivity.

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MIT Licensed

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