如何在swift中为折线图重新加载数据？

import Charts

// 创建折线图视图
let lineChartView = LineChartView(frame: CGRect(x: 0, y: 0, width: 300, height: 200))

// 准备好用于绘制折线图的数据源
var dataEntries: [ChartDataEntry] = [
    ChartDataEntry(x: 0, y: 10),
    ChartDataEntry(x: 1, y: 20),
    ChartDataEntry(x: 2, y: 15)
]

// 创建折线图数据集
let dataSet = LineChartDataSet(entries: dataEntries, label: "折线图")

// 创建折线图数据对象
let data = LineChartData(dataSet: dataSet)

// 设置折线图视图的数据
lineChartView.data = data

// 更新数据源
dataEntries = [
    ChartDataEntry(x: 0, y: 5),
    ChartDataEntry(x: 1, y: 15),
    ChartDataEntry(x: 2, y: 20),
    ChartDataEntry(x: 3, y: 10)
]

// 创建新的折线图数据集
let newDataSet = LineChartDataSet(entries: dataEntries, label: "新的折线图")

// 更新折线图数据对象
lineChartView.data?.removeDataSet(dataSet)
lineChartView.data?.addDataSet(newDataSet)

// 刷新折线图视图
lineChartView.notifyDataSetChanged()
lineChartView.setNeedsDisplay()