Color and Size Legends

Colour and Size Legends

This example demonstrates two distinct legend types for mapping data to visual encodings. A color legend displays ordinal categories—apple, lemon, lime, and orange—paired with distinct hues using `d3.scaleOrdinal`. Adjacent to it, a size legend uses `d3.scaleSqrt` to map a continuous numeric domain from 0 to 10 to circle radii, filtering out zero and reversing tick order for display. Both legends are built with reusable D3 functions that append SVG groups, circles, and text elements, with tick styling applied via CSS classes.

Ccornshoots

Color and Size Legends

This example demonstrates two reusable legend components rendered as SVG: a color legend for ordinal data and a size legend for quantitative data. The color legend maps categorical values like "apple" and "lemon" to distinct colors, while the size legend uses d3.scaleSqrt to encode numeric ticks as proportional circle radii. Both legends are built with D3 v5 data joins, using selection.enter and merge to update groups, circles, and text. The code exports modular functions from colorLegend.js and sizeLegend.js, with styling applied via CSS classes like .tick.

VVineel Gannu

Color and size legends

This example demonstrates two distinct legend types for data visualization: a color legend and a size legend, both rendered as SVG. The color legend maps categorical values (apple, lemon, limes, orange) to distinct colors using `d3.scaleOrdinal`, while the size legend uses `d3.scaleSqrt` to map a numeric range (0–10) to circle radii, showing a proportional relationship. Both legends are built with the D3 library (v5) and its selective update pattern via `selection.merge`.

Rrintisch

Color and Size Legends

This example demonstrates two distinct legend types rendered side by side in SVG. A color legend uses `d3.scaleOrdinal` to map fruit categories—apple, lemon, lime, and orange—to distinct hues, with each entry displayed as a filled circle and label. A size legend uses `d3.scaleSqrt` to encode a numeric domain from 0 to 10 through varying circle radii, generating tick values via `sizeScale.ticks`. Both legends are constructed with reusable D3 functions that bind data to groups, updating circle and text elements on enter and merge.

WWarren-Fitzhenry

Color and Size Legends

This example demonstrates how to construct custom legends for both color and size encodings in D3 v5 with SVG rendering. The color legend displays four ordinal categories—apple, lemon, lime, and orange—using d3.scaleOrdinal, while the size legend uses d3.scaleSqrt to map numeric tick values to circle radii. Both legends use reusable functions that bind data to groups, append circles and text, and position them with translate transforms.

CCurran Kelleher

Color and Size Legends

This example demonstrates two legends: a color legend for ordinal data and a size legend for quantitative data. The color legend uses `d3.scaleOrdinal` to map fruit names to colors, while the size legend uses `d3.scaleSqrt` with five ticks to map numeric values to circle radii. Both legends are rendered as SVG groups using reusable functions that handle enter, update, and exit selections. The code relies on D3 v5’s `selection.call`, `selection.merge`, and scale methods to create interactive-looking, standalone legend components.

Ggregosaure

Color and Size Legends

This example demonstrates how to build both a color legend and a size legend using D3.js v5. The color legend maps ordinal categories (Apple, Lemon, Lime, Orange) to distinct colors via `scaleOrdinal`, while the size legend uses `scaleSqrt` to represent numerical values from 0 to 10 as circle radii. Both legends implement a general update pattern with `selection.merge()` for enter and exit transitions, rendering circles and text labels in SVG. The ticks for the size legend are generated using `sizeScale.ticks()`, with all elements styled via CSS classes.

Fframptonb

Color and Size Legends

This example demonstrates two distinct legend types: a color legend with ordinal categories for fruits and a size legend with a square-root scale mapping numeric values to circle radii. Using D3 v5, it renders SVG circles and text labels, with the color legend employing `scaleOrdinal` and the size legend using `scaleSqrt` with tick generation. The size legend positions circles based on cumulative radius sums with spacing, while both legends use reusable functions (`colorLegend` and `sizeLegend`) called via D3’s selection `.call()` pattern.

GGuillaume Calmettes