Lower end of the dial — the <PolarAngleAxis domain> floor.
Upper end of the dial — the <PolarAngleAxis domain> ceiling.
OptionaltargetThe target marker a bullet chart draws, when it has one.
OptionalbandsQualitative bands, ascending and bounded above only: a band starts where the previous one ended, and the first starts at min.
OptionallabelWhat the measure is called. Defaults to the data row's xKey value, the
way every other chart type takes its category label from xKey.
Configuration for gauge and bullet charts. Required when
chartTypeis'gauge'.The value comes from the one data row, but nothing else on a gauge does: a
<RadialBarChart>holds a magnitude and an angle, while the reading is "73 out of 100, 7 below target, in the 'ok' band". The range mirrors the chart's own domain and the rest is author knowledge, so all of it arrives here — there is deliberately no default range, since a guessed maximum misreports the one number the chart draws.