Glossary

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Chartability(also: Chartability Heuristics)

A set of heuristics for assessing the accessibility of data visualizations, developed by Frank Elavsky and the Dataviz Accessibility group. Chartability provides a systematic framework for evaluating whether charts, graphs, maps, and other data visualizations are accessible to…

Chernoff Faces(also: Chernoff's Faces)

A visualisation technique introduced by Herman Chernoff in 1973 that represents multivariate data by mapping each data variable to a facial feature — eye size, eye spacing, nose length, mouth curvature, face shape, and so on — producing one cartoon face per data sample. The idea…

Choropleth Map(also: Thematic Map, Shaded Map)

A type of thematic map in which geographic areas are shaded or patterned in proportion to a statistical variable, such as population density, income level, or unemployment rate. Darker or more intense colors typically represent higher values. Choropleth maps are widely used by…

Color Adaptive Graphics(also: Colour Adaptive Graphics)

A technique for automatically adjusting the colours in graphical content so that objects maintain similar colour contrast relative to their reference background colours, regardless of the viewing context. Unlike recolouring approaches that focus on preserving the author's…

Composite Figure(also: Multi-panel Figure, Multi-element Figure)

A figure that contains multiple distinct visual elements combined into a single image, such as a series of screenshots labeled (a) through (f), a set of charts showing different data sets, or a mix of photographs and diagrams. Composite figures present a significant…

Content Element(also: Visual Content Element, Non-Text Content)

A visual component within a document that conveys information beyond running text, including tables, charts, images, diagrams, equations, and code blocks. Content elements are often chosen for their ability to communicate complex information concisely and visually, but they…

Coordinated Views(also: Linked Views, Coordinated Multiple Views, Brushing and Linking)

A data visualization technique in which multiple representations of the same dataset are displayed simultaneously and kept synchronized, so that actions in one view (such as selecting, filtering, or sorting) are immediately reflected in all other views. In accessible data…

Cross-Filtering(also: Interactive Filtering, Linked Filtering)

A dashboard interaction technique where applying a filter in one component (such as selecting a category in a chart or using a dropdown widget) automatically updates the data displayed in other related components throughout the dashboard. Cross-filtering enables users to explore…

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