This example illustrates two distinct legend types for scatterplots using D3 v5 and SVG rendering. It combines a categorical color legend with an ordinal scale, showing fruit names mapped to distinct hues, and a quantitative size legend using a square-root scale for proportional circles. The size legend generates ticks from the scale and positions text offset by each circle’s radius. Both legends are built with reusable functions that append and update `g` elements, demonstrating a consistent pattern for interactive legend components.