Zoom to Bounding Box II d3v4

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Zoom to Bounding Box II d3v4

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Last edited Jul 13, 2018

Created on Jul 13, 2018

This example demonstrates zooming and panning across a map of the United States, with clickable states that smoothly transition to fill the viewport. It shows how to combine geographic projections with D3’s zoom behavior for interactive exploration. The visualization uses `d3.geoAlbersUsa` for the projection, `d3.geoPath` to render TopoJSON state boundaries, and `d3.zoom` to handle free pan and zoom. Clicking a state triggers a 750ms transition via `zoom.transform`, calculating a bounding-box scale and translate to frame the feature. The active state is highlighted in red, while stroke widths adjust inversely to the zoom level for crisp rendering.

AI-generated description

A variant of the Zoom to Bounding Box example that uses zoom transitions to smoothly interpolate between different views. This example also allows you to freely pan and zoom with the mouse (or touch).

forked from <a href='http://bl.ocks.org/mbostock/'>mbostock</a>'s block: <a href='http://bl.ocks.org/mbostock/9656675'>Zoom to Bounding Box II</a>

forked from <a href='http://bl.ocks.org/Fil/'>Fil</a>'s block: <a href='http://bl.ocks.org/Fil/652458d1831e41de6efe1d453152131b'>Zoom to Bounding Box II d3v4</a>

gpl-3.0 Licensed

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