Color and Size Legends

Color and Size Legends

This example demonstrates two distinct types of legends for data visualization: a color legend and a size legend. The color legend maps categorical fruit names to distinct colors using `scaleOrdinal`, while the size legend uses `scaleSqrt` to represent numeric values with proportional circle radii. Both legends are rendered as SVG groups, with circles and text labels positioned using `attr('transform', ...)`. The code employs D3 v5's selection and merge methods to efficiently update the legends, and the circles are styled with a black stroke for visual clarity.

MMihir Sawant

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 construct separate color and size legends for a visualization. The color legend uses a categorical ordinal scale to map fruit names to distinct colors, while the size legend uses a square-root scale to map a numeric domain to circle radii. Both legends are implemented as reusable functions that append groups of circles and text labels to an SVG canvas using D3 v5 methods like `scaleOrdinal`, `scaleSqrt`, and `selection.enter().append`. Data is encoded purely through visual channels, with no underlying dataset.

Ssiddharth171

Color and Size Legends

This example demonstrates how to create separate legends for ordinal color scales and quantitative size scales in D3 v5. The color legend uses a `scaleOrdinal` with fruit names mapped to distinct colors, while the size legend uses `scaleSqrt` to map numeric values to circle radii. Both legends are rendered as SVG groups using custom reusable functions that bind data to enter/merge/exit selections, positioning circles and text labels with transform attributes and spacing offsets.

MMounikaBeerelly

Color and Size Legends

This example demonstrates how to create custom color and size legends for D3 visualizations. The color legend displays four categorical fruits using a d3.scaleOrdinal with distinct color ranges, while the size legend uses d3.scaleSqrt to map numeric values from 0 to 10 to circle radii. Both legends are built using reusable functions with enter/merge/exit patterns, rendering SVG groups with circles and text labels. The code uses D3 v5 selection methods and scales to position legend items with configurable spacing and text offsets.

CClaudio Barone

Color and Size Legends

CClaudio Barone

Color and Size Legends

This example shows two custom legends for visualizing categorical and quantitative data: a color legend mapping fruit names to distinct colors, and a size legend mapping numeric values to circle radii using d3.scaleOrdinal and d3.scaleSqrt. The legends are rendered as SVG groups with circles and text labels, positioned via transform attributes. The code uses d3-selection’s enter/merge/exit pattern to bind data and update elements, with custom functions colorLegend and sizeLegend defining the layout and spacing.

Jjlongwellchc

Color and Size Legends

The example demonstrates two reusable legend components rendered in SVG: a color legend built with `d3.scaleOrdinal` mapping fruit names to categorical colors, and a size legend using `d3.scaleSqrt` for continuous numeric values with circular markers. Both legends are generated through custom functions that bind data to groups, with the color legend encoding categories via circle fill and the size legend varying circle radius. The code relies on D3 v5 selections, `.enter()`, and `.merge()` patterns to update the legends dynamically.

Zzhangfa