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Color and size legends

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Xxiaoma1002
Last edited Mar 22, 2020
Created on Mar 22, 2020

A legend displays a color scale for four fruit categories—apple, lemon, lime, and orange—as colored circles with matching text labels. Built with D3 v5, the example uses `scaleOrdinal` to map domain values to specific colors and a custom `colorLegend` function that binds data to SVG groups via `selection.selectAll` and `enter()`. The legend is rendered with circle radius, spacing, and text offset as configurable props, demonstrating reusable legend components in SVG.

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