D3 Color and Size Legends

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

D3 Color and Size Legends

This example demonstrates two reusable D3 legend components rendered as SVG: a color legend for ordinal scales and a size legend for quantitative scales. The color legend displays fruit categories as colored circles with labels, while the size legend visualizes numeric values through scaled circle radii. Both components use D3’s selection join pattern with `selection.enter` and `selection.merge` to update elements. The size legend relies on `scaleSqrt.ticks` to generate tick values, while the color legend maps ordinal domain values to a range of colors via `scaleOrdinal`.

Rrdeichert

Color and Size Legends

This example demonstrates two reusable legend components rendered side by side in an SVG: a color legend using an ordinal scale mapping fruit names to distinct colors, and a size legend built from a square-root scale with circular marks sized proportionally to tick values. Both legends use D3 v5’s selection joins to update enter and exit states. The color legend calls `scaleOrdinal`. The size legend uses `scaleSqrt.ticks()` for tick generation.

Ffbudwill

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

d3 Color and Size Legends

This example demonstrates how to build reusable legend components for both color and size scales. Two separate legends are rendered in an SVG: one showing fruit categories as colored circles using a d3 scaleOrdinal, and another displaying a d3 scaleSqrt with five tick values as scaled circles. The colorLegend and sizeLegend functions manage enter/update/exit selections, appending circle and text elements with attributed transforms and offsets. The code relies on d3-selection methods like selectAll, merge, and exit, with styling applied through external CSS classes.

JJohnPaulPagelerJr

Color and Size Legends

This example demonstrates two legend styles for D3 visualizations: a color legend mapping ordinal categories to colors, and a size legend mapping a square-root scale to circle radii. The color legend displays four fruit labels next to colored circles, while the size legend shows five tick values with circles whose areas scale with the data. Both legends are built as reusable SVG components using D3's selection API, with `scaleOrdinal` and `scaleSqrt` defining the mappings. The code uses `.call()` to invoke the legend functions and `merge()` to handle updates efficiently.

Aannadehtiarova

Color and Size Legends

This example demonstrates how D3 legends can encode data through color and size. Two separate legends are rendered with SVG: a color legend uses an ordinal scale to map fruit categories to distinct hues, while a size legend uses a square-root scale to represent numeric values with scaled circle radii. The code builds reusable legend components using D3’s data join pattern, applying scales like `scaleOrdinal` and `scaleSqrt`, with manual spacing and text offsets for tick labels.

Ddaigokawabe

Color and Size Legends

This example demonstrates two custom legend components rendered as SVG: a color legend using a d3 ordinal scale mapping fruit names to colors, and a size legend using a d3 square-root scale mapping numeric values to circle radii. The color legend places equally sized circles with labels, while the size legend shows varying circle sizes with tick values generated by `sizeScale.ticks()`. Both rely on D3’s data join pattern (`selectAll().data().enter()`) with explicit `spacing` and `textOffset` props for layout, and are called via the `selection.call()` method.

Iianleekq