Color and Size Legends

Color and Size Legends

This example demonstrates how to create custom legends for both ordinal color scales and continuous size scales in D3 v5. It shows a color legend with four fruit categories (apple, lemon, lime, orange) rendered as colored circles, and a separate size legend with scaled circles representing values from 0 to 10. The code builds reusable legend components using D3’s `scaleOrdinal`, `scaleSqrt`, and `selection.call()`, rendering everything as SVG elements with styled fonts and circle strokes defined in CSS.

JJustine Giaky Huynh

Color and Size Legends

This example demonstrates two reusable D3.js legend components: a color legend for ordinal scales and a size legend for quantitative scales. The color legend displays four fruit categories with distinct colors, while the size legend uses a square-root scale with four reversed ticks. Both legends are implemented as custom D3.js functions that accept an SVG group and configuration props, using d3.scaleOrdinal and d3.scaleSqrt. The SVG rendering includes labeled circles with custom spacing and text offsets, styled via CSS with sans-serif fonts and black stroke outlines.

LLeora Wenger

Color and Size Legends

This example demonstrates two custom legend components for visualizing color and size encodings in D3 v5. The color legend displays a categorical scale with fruit names (apple, lemon, lime, orange) using distinct colors, while the size legend uses a square-root scale to represent numeric values from 0 to 10 with proportional circle radii. Both legends are rendered as SVG groups with tick marks, using D3’s selection joins and scales (`scaleOrdinal`, `scaleSqrt`). Circles and text labels are positioned dynamically based on spacing and scale values, with styles defined in external CSS.

Jjesramyep1263

Color and Size Legends

This example demonstrates two reusable legend components rendered as SVG: a color legend for ordinal scales and a size legend for quantitative scales. The color legend displays fruit categories (apple, lemon, lime, orange) as colored circles, while the size legend uses a square-root scale to map numeric values to circle radii. Both legends are built with D3 v5, using `scaleOrdinal` and `scaleSqrt`, with custom functions that handle enter/merge/exit selections. The code imports `select` from D3 and renders the legends via the `call` method.

MMichał Szumnarski

Color and Size Legends

This example demonstrates two reusable legend components rendered with D3 v5: a color legend for ordinal scales and a size legend for square-root scales. The color legend maps fruit categories to distinct colors, while the size legend visualizes numeric values using scaled circle radii. Both components use D3 selections and data joins to update legends dynamically. The code relies on `scaleOrdinal`, `scaleSqrt`, `scale.ticks`, and custom group elements with SVG circles and text labels, styled via CSS classes.

MMinwoo Pak

Color and Size Legends

This example demonstrates two reusable legend components: a color legend for ordinal scales and a size legend for quantitative scales. The color legend displays four fruit categories with distinct colored circles, while the size legend shows five circular markers scaled by magnitude using `d3.scaleSqrt`. Both components render as SVG groups with nested circles and text labels, utilizing D3 v5 data joins. The legends are positioned manually within an SVG canvas, with text offset from circle centers for readability.

JJuyeonee

Fork of Color and Size Legends

This example demonstrates reusable D3.js legend components for ordinal color scales and sequential size scales. The color legend displays four fruit categories (apple, lemon, lime, orange) as colored circles, while the size legend visualizes numeric ticks from 0 to 10 as scaled circles. Both legends use D3 v5’s `scaleOrdinal` and `scaleSqrt`, with custom legend modules handling circle positioning and text offsets. The SVG rendering includes styled ticks and text, with circles given black stroke outlines for visual separation.

IIsigned

Color and Size Legends

This example demonstrates two reusable legend components in D3 v5: a color legend for ordinal scales and a size legend for quantitative scales. The color legend maps fruit names to distinct colors using `scaleOrdinal`, while the size legend uses `scaleSqrt` to represent numeric ticks as proportional circle radii. Both legends are rendered as SVG groups with circles and text, using `.call()` to apply the component functions. The size legend filters out zero values and reverses tick order to display larger circles first.

Nnkohdatavis