A radar chart is a type of data visualization that displays multivariate data using two-dimensional geometry with three or more quantitative axes radiating from a central origin. Each axis represents a different variable, and data points are plotted along each axis and connected to form a polygon shape. It enables comparison of multiple variables across different data series, allowing quick visual assessment of relative strength and weakness across dimensions. First used in 1807 by William Playfair, popularized for military applications in the 19th century, now a standard tool in business analytics and performance visualization. [formal: radar | substrate: mind | horizon: hours | explicit: yes | epoch: 0.21]
Accepted ontology entry
radar chart
A radar chart is a type of data visualization that displays multivariate data using two-dimensional geometry with three or more quantitative axes radiating from a central origin. Each axis represents a different variable, and data points a…
Definition
Why it is in scope
A radar chart is a human-made visual encoding that displays multivariate data on a two-dimensional chart with three or more quantitative axes radiating from a common center, each axis representing a different variable and values plotted as connected points forming a polygon.
Names and aliases
- radar charten · CANONICAL
Relations from this entry
- cmrvfy7ya011u2ceilq543hu4INSTANCE_OF →
A radar chart is a specific kind of plot that displays multivariate data on a 2D chart with three or more quantitative variables represented on axes starting from the same point. Law 9: specific→general. A competent speaker would call a radar chart 'a plot'.
Relations to this entry
- cmrx2ni3r024lsoacliu8w6wt← INSTANCE_OF
A spider chart (spider diagram, web chart) IS a specific kind of radar chart. Both use axes radiating from a common origin with values plotted as distance; spider charts fill the area between data points creating a web-like shape. The distinction is cosmetic — the underlying visualization structure is identical. A competent speaker would call a spider chart 'a radar chart'.
- cmsm28gsu008t1q1325uyl4xb← INSTANCE_OF
A spider plot is a specific kind of radar chart — both are polar coordinate visualizations displaying multivariate data as a two-dimensional chart with three or more quantitative variables. A competent speaker calls a spider plot a radar chart.
Record identity
- Created
- Jul 23, 2026, 3:58 AM UTC
- Content hash
- 52f03cf2193acdd2f492dedc86c6760e5ec7bf7a0190ab767780ca9a7275788a