【メモ】Chart - ScatterChartDataSetのShapeの書き方と例

グラフ作成ライブラリ「Charts」の点グラフ（散布図）「ScatterChart」の点の形の書き方

Shapeの種類

ScatterChartDataSet.swift

@objc(ScatterShape)
    public enum Shape: Int
    {
        case square
        case circle
        case triangle
        case cross
        case x
        case chevronUp
        case chevronDown
    }

書き方の例

ViewController.swift

import Charts

class ViewController: UIViewController {
    var chartView: ScatterChartView!
    var dataSets: NSMutableArray = []
    var data: ScatterChartData!

    override func viewDidLoad() {
        var entries: [BarChartDataEntry] = []
        entries.append(BarChartDataEntry(x: 0, y: 0))
        entries.append(BarChartDataEntry(x: 1, y: 1))

        var exampleSet = ScatterChartDataSet(values: entries, label: "entries")
        exampleSet.setScatterShape(ScatterChartDataSet.Shape.circle) //entriesの点を指定(circle)
        exampleSet.setColor(NSUIColor.red) //entriesの点の色を指定(red)

        self.dataSets.addObjects(from: [exampleSet])

        self.data = ScatterChartData(dataSets: self.dataSets as! [IChartDataSet])

        self.chartView.data = self.data
    }
}