OptionaltitleTitle for the width legend.
OptionaltitlePadding between title and legend content in pixels.
OptionalmarginTop margin (distance from the size legend) in pixels.
OptionalbarHeight of the example bars in pixels.
OptionaloffsetHorizontal offset in pixels applied to the legend content.
OptionalvaluesCustom values to display. If null, auto-generates [max, mid, 10% max].
OptionallabelCustom formatter function for legend labels.
Configuration for the width legend in grouped-mode bar chart maps (data-driven bar width).