iOS图表（Daniel Gindi）-如何在Swift中设置双y轴双图形线

我正在使用。以下是我的单y轴单线图代码：当我尝试向y轴添加第二条线时，它抛出错误“无法将“LineChartDataSet”类型的值转换为预期的参数类型“String”

导入UIKit
进口图表
类PulseController:UIViewController、ChartViewDelegate{
@IBVAR lineChartView：lineChartView！
重写func viewDidLoad（）{
super.viewDidLoad（）
月份=[“一月”、“二月”、“三月”、“四月”、“五月”、“六月”]
让unitsSold=[20.0,4.0,6.0,3.0,12.0,16.0]
设置图表（月，值：unitsSold）
}
func集合图表（数据点：[字符串]，值：[双精度]）{
变量数据项：[ChartDataEntry]=[]
对于0中的i..
@IBOutlet var lineChartView:lineChartView！
重写func viewDidLoad（）{
super.viewDidLoad（）
月份=[“一月”、“二月”、“三月”、“四月”、“五月”、“六月”]
让unitsSold1=[20.0,4.0,6.0,3.0,12.0,16.0]
设unitsSold2=[200.0400.0600.0300.01220.0160.0]
设置图（月，值1:unitsSold1，值2:unitsSold2）
}
func集合图表（数据点：[字符串]、值1:[双精度]、值2:[双精度]）
{
var dataEntries1:[ChartDataEntry]=[]
var dataEntries2:[ChartDataEntry]=[]
对于0..中的i，只需添加以下行：

lineChartView.rightAxis.enabled = false
lineChartView.xAxis.drawGridLinesEnabled = true

谢谢！但我已经尝试过使用这种代码，但它在“lineChartDataSets.append（lineChartDataSet1）”中引发错误-“无法将“LineChartDataSet”类型的值转换为预期的值类型“String”。请您在代码中添加此行以通知数据集。lineChartView.data notifyDataChanged（）lineChartView notifyDataChanged（）你也可以查看下面的URL，希望你能得到你的答案。谢谢@ashmi123，你的github链接…帮了我很多忙，事实上，我正试图在同一个图表上获得双图，如下所示
    @IBOutlet var lineChartView: LineChartView!


    override func viewDidLoad() {
        super.viewDidLoad()

        let months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
        let unitsSold1 = [20.0, 4.0, 6.0, 3.0, 12.0, 16.0]
        let unitsSold2 = [200.0, 400.0, 600.0, 300.0, 120.0, 160.0]

        setChart(months, values1: unitsSold1,values2:unitsSold2)

    }

    func setChart(dataPoints: [String], values1: [Double],values2:[Double]) 
    {

        var dataEntries1: [ChartDataEntry] = []
        var dataEntries2: [ChartDataEntry] = []

        for i in 0..<dataPoints.count 
        {
            let dataEntry1 = ChartDataEntry(value: values1[i], xIndex: i)
            dataEntries1.append(dataEntry1)
            let dataEntry2 = ChartDataEntry(value: values2[i], xIndex: i)
            dataEntries2.append(dataEntry2)

        }



        let lineChartDataSet1 = LineChartDataSet(yVals: dataEntries1, label: "Pulse1")
        let lineChartDataSet2 = LineChartDataSet(yVals: dataEntries2, label: "Pulse2")

        var lineChartDataSets :[String]
        lineChartDataSets.append(lineChartDataSet1)
        lineChartDataSets.append(lineChartDataSet2)

        let lineChartData = LineChartData(xVals: dataPoints, dataSet: lineChartDataSets)
        lineChartView.data = lineChartData


        lineChartView.animate(xAxisDuration: 2.0)
        lineChartView.animate(yAxisDuration: 2.5)

        lineChartDataSets.setCircleColor(UIColor.init(red: 14/255, green: 165/255, blue: 150/255, alpha: 1))

        lineChartDataSets.setColor(UIColor.init(red: 14/255, green: 165/255, blue: 150/255, alpha: 1))


    }

lineChartView.rightAxis.enabled = false
lineChartView.xAxis.drawGridLinesEnabled = true