Pan & Zoom III + fix

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Pan & Zoom III + fix

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Last edited Oct 23, 2020

Created on Oct 23, 2020

This example shows an interactive scatterplot of 2,000 points arranged in a spiral, which users can pan and zoom by dragging or scrolling over the entire SVG canvas. The visualization relies on the d3-zoom behavior attached to a transparent overlay rectangle, ensuring smooth pointer interaction regardless of the zoomed content. During zooming, the code applies the current transform directly to a group element using the zoom event’s transform property, updating the positions of all circles in real time. The data is generated on the fly with a phyllotaxis function, while the SVG circles are rendered from an array of computed coordinates.

AI-generated description

This example demonstrates using d3-zoom to pan and zoom an SVG element by applying an SVG transform using transform.toString. The zoom behavior is applied to an invisible rect overlaying the SVG element; this ensures that it receives input, and that the pointer coordinates are not affected by the zoom behavior’s transform.

forked from <a href='http://bl.ocks.org/mbostock/'>mbostock</a>'s block: <a href='http://bl.ocks.org/mbostock/4e3925cdc804db257a86fdef3a032a45'>Pan & Zoom III</a>

forked from <a href='http://bl.ocks.org/Fil/'>Fil</a>'s block: <a href='http://bl.ocks.org/Fil/94969bd407186d397ae74781759fceb7'>Pan & Zoom III</a>

mit Licensed

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