part 3, Zoom and Panning with D3.js and canvas

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part 3, Zoom and Panning with D3.js and canvas

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Last edited Nov 1, 2018

Created on Sep 4, 2018

This example demonstrates interactive zooming, panning, and brushing of a synthetic scatterplot containing 10,000 random data points, rendered with a hybrid SVG–Canvas approach. The D3.js v4 code overlays an SVG layer for axes and controls on top of a Canvas layer for efficient point drawing, using `d3.zoom` and `d3.brush` to handle transformations and selections. A toolbar offers Reset, Zoom, and Brush modes, where zooming rescales axes via `d3.scaleLinear` and redraws points with `Canvas` arc primitives, while brushing highlights the selected region on the SVG layer.

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Part 3, based on this medium article.

mit Licensed

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