OptionaldescriptionOptionalfillPolygon fill opacity (default 0.2; 0 = outlines only)
OptionalformatValue text of rings, tooltip and a11y (spec, Intl options or function; default: locale number)
OptionalgridConcentric grid: 'polygon' (default) or 'circle'
OptionallegendLegend of the series (default: shown with 2+ series); click toggles, hover emphasizes
OptionalmarkersVertex markers: true (default, radius 3.5 px), false, or a radius in CSS px
OptionalmaxRadial max: one number shared by every axis (default: the nice max of the data), or one
per axis (null = the shared max). Ring labels show only on a shared scale
OptionalpaddingOptionalringsTarget ring count (nice steps; default 4)
OptionalshowRings / spokes (default: true)
OptionalstartDegrees clockwise from 12 o'clock of the first axis (default 0)
OptionalstrokePolygon stroke width in CSS px (default 2)
OptionaltitleOptionalvalueTooltip / table name of the values (default: 'Value' in the chart locale)
Accessible name of the canvas