init(x:yStart:yEnd:)

Declaration

nonisolated init<X>(x: PlottableValue<X>, yStart: CGFloat? = nil, yEnd: CGFloat? = nil) where X : Plottable

Parameters

• x:

  The value plotted with x.

• yStart:

  The y start position. If yStart is nil the rule will start at the leading edge of the plotting area.

• yEnd:

  The y end position. If yEnd is nil the rule will end at the trailing edge of the plotting area.

Discussion

Use this initializer to create a vertical rule across a chart’s plotting area at an x position:

Chart {
    ForEach(data) {
        BarMark(
            x: .value("Profit", $0.profit),
            y: .value("Department", $0.department)
        )
    }
    RuleMark(x: .value("Break Even Threshold", 9000))
        .foregroundStyle(.red)
}

[Image]

See the first code example in RuleMark for the setup of the structure that contains department and profit properties.