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color and size legends

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Jjlspangl
Last edited Sep 30, 2021
Created on Sep 29, 2021

This example demonstrates how to build separate color and size legends in D3 v5. The color legend uses a `scaleOrdinal` with a domain of fruit names mapped to distinct colors, while the size legend uses `scaleSqrt` to map numeric values to circle radii. Both legends are rendered as SVG groups via reusable functions that append circles and text labels. The size legend calculates tick values using `sizeScale.ticks(numTicks)` and positions text based on each circle’s radius plus an offset.

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