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 the units sold array to the chart, but don't know how to get the unitBought array to the chart to make it a grouped chart.please help.
@IBOutlet weak var barChartView: BarChartView! override func viewDidLoad() { super.viewDidLoad() months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"] let unitsSold = [20.0, 4.0, 6.0, 3.0, 12.0, 16.0, 4.0, 18.0, 2.0, 4.0, 5.0, 12.8] let unitsBought = [20.0, 4.0, 6.0, 3.0, 12.0, 16.0, 4.0, 18.0, 2.0, 4.0, 5.0, 12.8] setChart(months, values: unitsSold) } //functions func setChart(dataPoints: [String], values: [Double]) { barChartView.noDataText = "You need to provide data for the chart." var dataEntries: [BarChartDataEntry] = [] for i in 0..
You haven't actually done anything with unitsBought.
For a bar chart you can do two things:
- Add another DataSet with your
unitsBought - Use the other overload of
BarCharDataEntry(values: [Double], xIndex: Int) or BarCharDataEntry(values: [Double], xIndex: Int, label: String) to pass multiple values per entry, which makes it stacked.
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) }
func setChartBarGroupDataSet(dataPoints: [String], values: [Double], values2: [Double],sortIndex:Int) { var dataEntries: [BarChartDataEntry] = [] var dataEntries2: [BarChartDataEntry] = [] for i in 0..
