OptionalerrorWhat the series maps back to in the chart, for selection.
OptionallabelsBy point, its data label; null for a point without one. Absent when no point has one.
Line and scatter groups only.
By category, the point on its spoke; null for a blank. Joined in order, the last to the first.
OptionalslotsOn a date axis, the category each point is drawn in, by point: its date's day, month or
year; null for a point with no date. Absent where each point is in the category of its index.
OptionaltrendlinesThe series' trendlines, in the order it lists them. Absent when it has none.
One per category; null is a gap.
The series' error bars, in the order it lists them. Absent when it has none.