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init(xStart:xEnd:yStart:yEnd:)

Creates a rectangle mark with fixed x and y intervals.

Declaration

nonisolated init(xStart: CGFloat? = nil, xEnd: CGFloat? = nil, yStart: CGFloat? = nil, yEnd: CGFloat? = nil)

Discussion

  • xStart: The x start position. If xStart is nil then the rectangle will start at the leading edge of the plotting area.

  • xEnd: The x end position. If xEnd is nil then the rectangle will end at the trailing edge of the plotting area.

  • yStart: The y start position. If yStart is nil then the rectangle will start at the leading edge of the plotting area.

  • yEnd: The y end position. If yEnd is nil then the rectangle will end at the trailing edge of the plotting area.

Discussion

Use this initializer to create one rectangle with any optional x start, x end, y start, and y end position. If no parameters are specified the rectangle will fill the plotting area of the chart.

The example below uses a number scale starting at (0,0) and ending at (6,6). The rectangle has the coordinates: (2,2), (2,4), (4,4), (4,2).

Chart(data) {
    RectangleMark()
        .opacity(0.2)

    PointMark(
        x: .value("X", $0.x),
        y: .value("Y", $0.y)
    )
}

[Image]

See Also

Creating a rectangle mark