How to add string labels( xAxis labels) to horizontal bar in Charts framework

Question

I am using charts framework for drawing charts. I need to add some strings in left of every bars. In my code always there are two bars, one for Income and o

Answer 1

When you create your BarChartDataSet you can pass the label.

let data = BarChartData()
let ds1 = BarChartDataSet(values: yse1, label: "Income")
ds1.colors = [UIColor.red, UIColor.blue]

Hope this helps.

Answer 2

Charts framework is a great tool for drawing charts. You should study it perfectly. I used an old code in our project (copy/paste), so it caused some problems for drawing xAxis labels in my chart.

Just comment below line:

    horizontalBarChartView.xAxis.drawLabelsEnabled = false

Answer 3

 self.ChartObj.xAxis.valueFormatter = DefaultAxisValueFormatter(block: {(index, _) in
            print(index)
            return YourArray.object(at: Int(index)) as! String
        })
 self.ChartObj.xAxis.setLabelCount(YourArray.count, force: true)

Try this code

Answer 4

I am using an extension for this

extension BarChartView {

    private class BarChartFormatter: NSObject, IAxisValueFormatter {

        var labels: [String] = []

        func stringForValue(_ value: Double, axis: AxisBase?) -> String {
            return labels[Int(value)]
        }

        init(labels: [String]) {
            super.init()
            self.labels = labels
        }
    }

    func setBarChartData(xValues: [String], yValues: [Double], label: String) {

        var dataEntries: [BarChartDataEntry] = []

        for i in 0..<yValues.count {
            let dataEntry = BarChartDataEntry(x: Double(i), y: yValues[i])
            dataEntries.append(dataEntry)
        }

        let chartDataSet = BarChartDataSet(values: dataEntries, label: label)
        let chartData = BarChartData(dataSet: chartDataSet)

        let chartFormatter = BarChartFormatter(labels: xValues)
        let xAxis = XAxis()
        xAxis.valueFormatter = chartFormatter
        self.xAxis.valueFormatter = xAxis.valueFormatter

        self.data = chartData
    }
}

you can use this in code like this

chartView.setBarChartData(xValues: xEntries, yValues: yEntries, label: "Income")

where,

//You need to add values dynamically
var yEntries: [Double] = [1000, 200, 500]
var xEntries: [String] = ["Income1", "Income2", "Income3"]

Hope this works.