xAxis value starting at "-1" instead of "0" in grouped barchart

[GLianwei]

Here is my code:

    for i in 0..<recordsCount {
        let aEntry = BarChartDataEntry(x: Double(i), y: Double(self.yvalsA[i]))
        let bEntry = BarChartDataEntry(x: Double(i), y: Double(self.yvalsB[i]))
        aEntries.append(aEntry)
        bEntries.append(bEntry)
    }

    let setA = BarChartDataSet(values: aEntries, label: "a values")
    let setB = BarChartDataSet(values: bEntries, label: "b values")
    let dataSets = [setA, setB]
    let data = BarChartData(dataSets: dataSets)
    data.barWidth = 0.3
    data.groupBars(fromX: 0, groupSpace: 0.2, barSpace: 0.1)
    self.barChartView?.data = data
    self.barChartView?.xAxis.labelPosition = XAxis.LabelPosition.bottom
    self.barChartView?.xAxis.avoidFirstLastClippingEnabled = true
    self.barChartView?.xAxis.drawLabelsEnabled = true
    self.barChartView?.xAxis.labelFont = (self.barChartView?.xAxis.labelFont)!.withSize(self.fontChart)
    self.barChartView?.leftAxis.labelFont = (self.barChartView?.leftAxis.labelFont)!.withSize(self.fontChart)
    self.barChartView?.xAxis.labelCount = self.xAxisMonthInfo.count
    self.barChartView?.xAxis.centerAxisLabelsEnabled = true
    self.barChartView?.animate(xAxisDuration: 1.5, yAxisDuration: 1.5)

Please how I make it started at "0"?

[liuxuan30]

need more info.. btw, do check ChartsDemo with such things. You should find answer there.
If you see -1, then maybe try set axisMinium to 0. But usually it should be 0. It calculates x axis label values in open func computeAxisValues(min: Double, max: Double), you can check why it calculates -1