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Cheap tricks for interactions

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NNkwachi Abel
Last edited May 30, 2022
Created on May 29, 2022

This example shows a world map rendered with a natural Earth projection, where hovering over a country turns it red and displays its numeric ID as a tooltip. A zoom interaction lets the user pan and scale the map via mouse or touch. The visualization uses D3 v5’s `geoNaturalEarth1`, `geoPath`, and `zoom` functions, with country polygons sourced from the World Atlas TopoJSON dataset. The SVG scene is built in a React framework, with styling and hover states handled through CSS.

AI-generated description

A bare minimum HTML page demonstrating use of CSS and JavaScript.

See also React Starter.

MIT Licensed

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Cheap tricks for interaction

This example shows a world map where hovering over a country turns it red, with country names available as tooltips. The map uses a Natural Earth projection and renders with SVG paths. The code loads world-atlas TopoJSON and TSV data, then uses `d3.geoPath` and `d3.geoNaturalEarth1` to draw countries. It also demonstrates a rudimentary zoom interaction via `d3.zoom`, though the zoom handler only logs to the console. The visualization relies on d3 v5 and d3-geo-projection for the projection.

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