Glossary
Searchable terminology from accessibility, web standards, and related fields.
31 results found in Data Visualization.
- Chernoff Faces (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 curvatur…
- Color Adaptive Graphics (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 cont…
- Coordinated Views (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 s…
- Data sonification (Auditory graph, Audio chart)
- The representation of data values through non-speech audio, typically by mapping numerical values to auditory parameters such as pitch, volume, duration, or timbre. Data sonification makes charts and …
- Fisheye View (Fisheye Lens, Graphical Fisheye)
- A focus+context visualization technique, introduced by Furnas, that magnifies a region of interest while progressively compressing surrounding context — analogous to a fisheye camera lens. Used in tre…
- Focus+Context (Focus plus Context, Focus and Context)
- A visualization interaction paradigm that integrates a detailed focus region and its surrounding context into a single unified view, rather than separating them. Techniques include fisheye views, sema…
- GIS (Geographic Information System, Geographic Information Systems)
- A class of software systems — such as ArcGIS, QGIS, and open-source geospatial libraries — that capture, store, manipulate, analyze, and visualize geographic and spatial data by linking location coord…
- Geo-referenced Data (Geospatial Data, Geographic Data, Georeferenced Data)
- Data that is associated with specific geographic locations or regions, such as population statistics by county, crime rates by neighbourhood, or election results by district. Geo-referenced data is ty…
- Geovisualization (Geospatial visualization, Geographic visualization)
- The use of interactive visual representations — choropleth maps, dot density maps, heat maps, flow maps, and related forms — to make geographic patterns, trends, and spatial relationships visible and …
- Graph (Node-Edge Diagram, Network Diagram)
- A data structure and visual representation consisting of nodes (vertices) connected by edges (links) that represent relationships between entities. In computer science and mathematics, graphs are used…
- Graph Accessibility (Chart Accessibility, Data Visualization Accessibility)
- The practice of making charts, graphs, and other data visualisations perceivable and understandable to people with disabilities, particularly those who are blind or have low vision. Graph accessibilit…
- Graphical perception (Chart perception, Visual data perception)
- The cognitive process by which people extract quantitative information from visual data representations such as charts, graphs, and maps. Graphical perception involves comparing positions, lengths, ar…
- Haptic Graph (Haptic Chart, Force-feedback Graph)
- A haptic graph is a non-visual rendering of a chart or graph — a bar chart, line graph, scatter plot, or mathematical function — that a blind or low-vision user explores by touch, typically through a …
- Health Data Visualization (Health Data Display, Patient Data Visualization)
- The presentation of personal health information — such as blood glucose levels, blood pressure readings, activity data, or medication schedules — in visual formats including graphs, charts, trend line…
- Height-Field Surface (Surface plot, Heightfield plot, 2.5D surface)
- A type of 3D data visualisation in which a scalar value (for example, elevation, intensity, pressure, or probability) is plotted over a two-dimensional domain, producing a continuous surface that can …
- Information Extraction (IE, Data Extraction)
- The process of automatically identifying and retrieving structured information from unstructured or semi-structured data sources. In the context of accessibility and data visualization, information ex…
- Information Perceptualization (Perceptualization)
- Information perceptualization is the mapping of abstract data or information onto perceptual properties across multiple sensory modalities — vision, hearing, touch, and occasionally taste or smell — i…
- Line Graph (Line Chart, Line Plot)
- A type of data visualization that displays information as a series of data points connected by straight line segments, commonly used to show trends over time or relationships between variables. Line g…
- Mini-VLAT (Miniature VLAT)
- A 12-item short-form version of the Visualization Literacy Assessment Test developed by Pandey and Ottley that preserves reliability while reducing participant burden. Each chart type from the origina…
- Multivariate Data (Multivariate Dataset, High-Dimensional Data)
- Data in which each observation or sample has more than two measured variables (dimensions). Analysing multivariate data is a core task in statistics, science, and business intelligence, but presenting…