1，基本用法

import UIKit
import Charts

class ViewController: UIViewController {
    
    //雷达图
    var chartView: RadarChartView!
    
    //雷达图每个维度的标签文字
    let activities = ["力量", "敏捷", "生命", "智力", "魔法", "幸运"]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        //创建折线图组件对象
        chartView = RadarChartView()
        chartView.frame = CGRect(x: 20, y: 80, width: self.view.bounds.width - 40,
                                 height: 260)
        self.view.addSubview(chartView)
        
        //维度标签文字
        chartView.xAxis.valueFormatter = self
        
        //最小、最大刻度值
        let yAxis = chartView.yAxis
        yAxis.axisMinimum = 0
        yAxis.axisMaximum = 100
        yAxis.labelCount = 4
        yAxis.drawLabelsEnabled = false //不显示刻度值
        
        //生成6条随机数据
        let dataEntries = (0..<6).map { (i) -> RadarChartDataEntry in
            return RadarChartDataEntry(value: Double(arc4random_uniform(50) + 50))
        }
        let chartDataSet = RadarChartDataSet(values: dataEntries, label: "李大宝")
        //目前雷达图只包括1组数据
        let chartData = RadarChartData(dataSets: [chartDataSet])
        
        //设置雷达图数据
        chartView.data = chartData
    }
}

extension ViewController: IAxisValueFormatter {
    //维度标签文字（x轴文字）
    func stringForValue(_ value: Double, axis: AxisBase?) -> String {
        return activities[Int(value) % activities.count]
    }
}

（2）下面是包含两组数据的六维图。为了让显示更清晰，这里不显示具体的数字值。

import UIKit
import Charts

class ViewController: UIViewController {
    
    //雷达图
    var chartView: RadarChartView!
    
    //雷达图每个维度的标签文字
    let activities = ["力量", "敏捷", "生命", "智力", "魔法", "幸运"]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        //创建折线图组件对象
        chartView = RadarChartView()
        chartView.frame = CGRect(x: 20, y: 80, width: self.view.bounds.width - 40,
                                 height: 260)
        self.view.addSubview(chartView)
        
        //维度标签文字
        chartView.xAxis.valueFormatter = self
        
        //最小、最大刻度值
        let yAxis = chartView.yAxis
        yAxis.axisMinimum = 0
        yAxis.axisMaximum = 100
        yAxis.labelCount = 4
        yAxis.drawLabelsEnabled = false //不显示刻度值
        
        //随机数据生成方法
        let block: (Int) -> RadarChartDataEntry = { _ in
            return RadarChartDataEntry(value: Double(arc4random_uniform(50) + 50))
        }
        //生成两组数据
        let dataEntries1 = (0..<6).map(block)
        let chartDataSet1 = RadarChartDataSet(values: dataEntries1, label: "李大宝")
        chartDataSet1.setColor(ChartColorTemplates.joyful()[4])
        
        let dataEntries2 = (0..<6).map(block)
        let chartDataSet2 = RadarChartDataSet(values: dataEntries2, label: "王小强")
        chartDataSet1.setColor(ChartColorTemplates.joyful()[1])
        
        //目前雷达图包括2组数据
        let chartData = RadarChartData(dataSets: [chartDataSet1, chartDataSet2])
        chartData.setDrawValues(false) //不显示值标签
        
        //设置雷达图数据
        chartView.data = chartData
    }
}

extension ViewController: IAxisValueFormatter {
    //维度标签文字（x轴文字）
    func stringForValue(_ value: Double, axis: AxisBase?) -> String {
        return activities[Int(value) % activities.count]
    }
}

2，设置线条和填充样式

chartDataSet.setColor(.orange) //线条颜色
chartDataSet.lineWidth = 2 //线条粗细
chartDataSet.fillColor = .orange //填充颜色
chartDataSet.fillAlpha = 0.4  //填充透明度
chartDataSet.drawFilledEnabled = true  //启用填充色绘制

3，设置网格线样式

chartView.webLineWidth = 2 //网格主干线粗细
chartView.webColor = .red //网格主干线颜色
chartView.webAlpha = 1  //网格线透明度
chartView.innerWebLineWidth = 1  //网格边线粗细
chartView.innerWebColor = .orange  //网格边线颜色

4，设置数值文字的样式