So erstellen Sie mehrere Datensätze in BarCharts IOS-Diagramme

Question

Ich erstellte zwei Datensätze, chartDataSet und limitDataSet.

var dataEntries = [BarChartDataEntry]() 
    var limitEntries = [BarChartDataEntry]() 

    for i in 0..<daily[index].count { 
     let dataEntry = BarChartDataEntry(value: values[index][i], xIndex: i) 
     let limitEntry = BarChartDataEntry(value: limitValues[index][i], xIndex: i) 
     dataEntries.append(dataEntry) 
     limitEntries.append(limitEntry) 
    } 

    let chartDataSet = BarChartDataSet(yVals: dataEntries, label: label) 
    chartDataSet.colors = [UIColor(red: 108/255, green: 189/255, blue: 146/255, alpha: 1)] 
    let limitDataSet = BarChartDataSet(yVals: limitEntries, label: "Limit in mg") 
    limitDataSet.colors = [UIColor(red: 219/255, green: 70/255, blue: 70/255, alpha: 1)] 

    var dataSets = [BarChartDataSet]() 
    dataSets.append(chartDataSet) 
    dataSets.append(limitDataSet) 

    //this line does has error 
    let chartData = BarChartData(xVals: daily[index], dataSet: dataSets) 

    monthlyChart.data = chartData 

Ich brauche die Datensätze in meiner Bar Chart hinzuzufügen, aber der Code, den ich verwenden, würde nur für einzelne dataSet arbeiten.

Dies ist das Diagramm, das ich in meinem Projekt verwendet habe. https://github.com/danielgindi/Charts

Answer 1

Ich habe 2 dataSets auf BarChart nicht hinzugefügt.

Aber ich habe dies mit PieChart getan.

Hoffe, das wird Ihnen helfen.

import UIKit 

class ViewController: UIViewController { 


     @IBOutlet weak var pieChartView: PieChartView! 
     override func viewDidLoad() { 
     super.viewDidLoad() 
     // Do any additional setup after loading the view, typically from a nib. 

     let months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"] 
     let unitsSold = [20.0, 4.0, 6.0, 3.0, 12.0, 16.0] 

     setChart(months, values: unitsSold) 

     setChart2(months, values: unitsSold) 


    } 


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

     var dataEntries: [ChartDataEntry] = [] 

     for i in 0..<dataPoints.count { 
      let dataEntry = ChartDataEntry(value: values[i], xIndex: i) 
      dataEntries.append(dataEntry) 
     } 

     let pieChartDataSet = PieChartDataSet(yVals: dataEntries, label: "Units Sold") 

     let formatter = NSNumberFormatter() 
     formatter.numberStyle = .PercentStyle 
     formatter.maximumFractionDigits = 1 
     formatter.multiplier = 1.0 


     let pieChartData = PieChartData(xVals: dataPoints, dataSet: pieChartDataSet) 

     pieChartData.dataSet?.valueFormatter = formatter 


     pieChartView.data = pieChartData 

     pieChartView.holeColor = UIColor.clearColor() 

     pieChartView.holeRadiusPercent = 0.95 

     pieChartView.centerText = "Hello\nThis is Pie chart" 

pieChartView.usePercentValuesEnabled = true 


     var colors: [UIColor] = [] 

     for i in 0..<dataPoints.count { 
      let red = Double(arc4random_uniform(255)) 
      let green = Double(arc4random_uniform(255)) 
      let blue = Double(arc4random_uniform(255)) 

      let color = UIColor(red: CGFloat(red/255), green: CGFloat(green/255), blue: CGFloat(blue/255), alpha: 1) 
      colors.append(color) 
     } 

     pieChartDataSet.colors = colors 




    } 

    func setChart2(dataPoints: [String], values: [Double]) { 

     var dataEntries: [ChartDataEntry] = [] 

     for i in 0..<dataPoints.count { 
      let dataEntry = ChartDataEntry(value: values[i], xIndex: i) 
      dataEntries.append(dataEntry) 
     } 

     let pieChartDataSet = PieChartDataSet(yVals: dataEntries, label: "Units Sold") 

     let formatter = NSNumberFormatter() 
     formatter.numberStyle = .PercentStyle 
     formatter.maximumFractionDigits = 1 
     formatter.multiplier = 1.0 


     let pieChartData = PieChartData(xVals: dataPoints, dataSet: pieChartDataSet) 

     pieChartData.dataSet?.valueFormatter = formatter 


     pieChartView.data = pieChartData 

     pieChartView.holeColor = UIColor.clearColor() 

     pieChartView.holeRadiusPercent = 0.95 

     pieChartView.centerText = "Hello\nThis is Pie chart" 

     pieChartView.usePercentValuesEnabled = true 


     var colors: [UIColor] = [] 

     for i in 0..<dataPoints.count { 
      let red = Double(arc4random_uniform(255)) 
      let green = Double(arc4random_uniform(255)) 
      let blue = Double(arc4random_uniform(255)) 

      let color = UIColor(red: CGFloat(red/255), green: CGFloat(green/255), blue: CGFloat(blue/255), alpha: 1) 
      colors.append(color) 
     } 

     pieChartDataSet.colors = colors 




    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 


} 

Happy eine glückliche Codierung.