Color Legends

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✓ Published0🌍 Public

Last edited Dec 5, 2018

Created on Dec 5, 2018

A color legend maps ordinal categories to hues, displaying two large circular swatches for "apple" and "lemon" against a white background. The `d3.scaleOrdinal` assigns red and yellow, while a custom `colorLegend` function binds the scale's domain to SVG groups. Circles and text labels are appended and updated via enter/merge/exit selections, with transform positions calculated from array index and a fixed height. The example demonstrates reusable D3 v5 code for building legends with dynamic scaling.

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MIT Licensed

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