Convert bar chart to a grouped bar chart with danielgindi/ios-charts and Swift

Question

i have created the simple bar chart with the library at https://github.com/danielgindi/ios-charts still can\'t figure out how to make this a grouped bar chart. I\'ve added t

Answer 1

let months = ["Jan", "Feb", "Mar", "Apr", "May"]
    let unitsSold = [20.0, 4.0, 6.0, 3.0, 12.0]
    let unitsBought = [10.0, 14.0, 60.0, 13.0, 2.0]

     override func viewDidLoad() {
            super.viewDidLoad()
            // Do any additional setup after loading the view, typically from a nib.
            barChartView.delegate = self
            barChartView.noDataText = "You need to provide data for the chart."
            barChartView.chartDescription?.text = "sales vs bought "


            //legend
            let legend = barChartView.legend
            legend.enabled = true
            legend.horizontalAlignment = .right
            legend.verticalAlignment = .top
            legend.orientation = .vertical
            legend.drawInside = true
            legend.yOffset = 10.0;
            legend.xOffset = 10.0;
            legend.yEntrySpace = 0.0;


            let xaxis = barChartView.xAxis
            xaxis.valueFormatter = axisFormatDelegate
            xaxis.drawGridLinesEnabled = true
            xaxis.labelPosition = .bottom
            xaxis.centerAxisLabelsEnabled = true
            xaxis.valueFormatter = IndexAxisValueFormatter(values:self.months)
            xaxis.granularity = 1


            let leftAxisFormatter = NumberFormatter()
            leftAxisFormatter.maximumFractionDigits = 1

            let yaxis = barChartView.leftAxis
            yaxis.spaceTop = 0.35
            yaxis.axisMinimum = 0
            yaxis.drawGridLinesEnabled = false

            barChartView.rightAxis.enabled = false
           //axisFormatDelegate = self

            setChart()
        }

 func setChart() {
        barChartView.noDataText = "You need to provide data for the chart."
        var dataEntries: [BarChartDataEntry] = []
        var dataEntries1: [BarChartDataEntry] = []

        for i in 0.. interval per "group" 

        let groupCount = self.months.count
        let startYear = 0


        chartData.barWidth = barWidth;
        barChartView.xAxis.axisMinimum = Double(startYear)
        let gg = chartData.groupWidth(groupSpace: groupSpace, barSpace: barSpace)
        print("Groupspace: \(gg)")
        barChartView.xAxis.axisMaximum = Double(startYear) + gg * Double(groupCount)

        chartData.groupBars(fromX: Double(startYear), groupSpace: groupSpace, barSpace: barSpace)
        //chartData.groupWidth(groupSpace: groupSpace, barSpace: barSpace)
        barChartView.notifyDataSetChanged()

        barChartView.data = chartData






        //background color
        barChartView.backgroundColor = UIColor(red: 189/255, green: 195/255, blue: 199/255, alpha: 1)

        //chart animation
        barChartView.animate(xAxisDuration: 1.5, yAxisDuration: 1.5, easingOption: .linear)


    }