Bar Width issue after reset the data

[jayeshkanzariya]

i am displaying here 12 months data after that i am changing the data to 3 months then bar width is changed and display like below image.

Here is the code which i am using for set data in bar chart.

func setDataInChart(chartView : BarChartView,dataArray : [ChartDataModel]){
    
    chartView.clear()
    chartView.clearValues()
   
    
    let grouppedData = dataArray.group(by: {$0.name})
    print(dataArray.group { $0.name })
    
    var xArray = [String]()
    for (_,obj) in grouppedData.enumerated(){
        xArray = obj.value.sorted(by: {$0.monthNo < $1.monthNo}).map({$0.month})
        break
    }
    
    
    let formatter = CustomLabelsXAxisValueFormatter()
    formatter.labels = xArray
    chartView.xAxis.valueFormatter = formatter
    
    
    var dataEntries = [String : [BarChartDataEntry]]()
    for (_,obj) in grouppedData.enumerated(){
        var dataEntry = [BarChartDataEntry]()
        for (index,data) in obj.value.sorted(by: {$0.monthNo < $1.monthNo}).enumerated(){
            dataEntry.append(BarChartDataEntry(x: Double(index), y: data.value, icon: nil))
        }
        dataEntries[obj.key] = dataEntry
    }
    
    var datasetArray = [BarChartDataSet]()
    
    for (index,entry) in dataEntries.enumerated(){
        let set = BarChartDataSet(values: entry.value, label: entry.key)
        set.drawIconsEnabled = false
        if index == 0{
            set.colors = [#colorLiteral(red: 0.3176470588, green: 0.8, blue: 0.5843137255, alpha: 1)]
        }
        else if index == 1{
            set.colors = [#colorLiteral(red: 0.3921568627, green: 0.8784313725, blue: 0.662745098, alpha: 1)]
        }
        else if index == 2{
            set.colors = [#colorLiteral(red: 0.4509803922, green: 0.937254902, blue: 0.7215686275, alpha: 1)]
        }
        else if index == 3{
            set.colors = [#colorLiteral(red: 0.6470588235, green: 0.968627451, blue: 0.8235294118, alpha: 1)]
        }
        
        set.valueTextColor = UIColor.black
        set.valueFont = UIFont(name: "Lato-Regular", size: 10)!
        datasetArray.append(set)
    }
    
    let groupSpace = 0.4
    let barSpace = 0.03
    let barWidth = 0.3



    
    let data = BarChartData(dataSets: datasetArray)
    data.barWidth = barWidth

// chartView.xAxis.axisMinimum = 0.0

    chartView.xAxis.resetCustomAxisMin()
    chartView.xAxis.resetCustomAxisMax()
    chartView.rightAxis.resetCustomAxisMin()
    chartView.rightAxis.resetCustomAxisMax()
    
    if datasetArray.count > 1{
        chartView.xAxis.centerAxisLabelsEnabled = true
        chartView.xAxis.axisMaximum = 0.0 + data.groupWidth(groupSpace: groupSpace, barSpace: barSpace) * Double(xArray.count)
        data.groupBars(fromX: 0.0, groupSpace: groupSpace, barSpace: barSpace)
        chartView.xAxis.granularity = chartView.xAxis.axisMaximum / Double(xArray.count)
    }
    
    else{
        chartView.xAxis.centerAxisLabelsEnabled = false
        chartView.xAxis.granularity = 1.0
    }

    chartView.data = data
    data.notifyDataChanged()
    chartView.notifyDataSetChanged()
    chartView.setVisibleXRangeMaximum(7)

}

[liuxuan30]

seems like by design; the more bars you have, the thinner you get; and vice versa.
if you want thin bars in your 3 months chart, you have to override a few methods to do so. or modify the bar width. do not use grouped bar space if you are not using multiple bar chart.

[jayeshkanzariya]

if datasetArray.count > 1{
chartView.xAxis.centerAxisLabelsEnabled = true
chartView.xAxis.axisMaximum = 0.0 + data.groupWidth(groupSpace: groupSpace, barSpace: barSpace) * Double(xArray.count)
data.groupBars(fromX: 0.0, groupSpace: groupSpace, barSpace: barSpace)
chartView.xAxis.granularity = chartView.xAxis.axisMaximum / Double(xArray.count)
}

else{
    chartView.xAxis.centerAxisLabelsEnabled = false
    chartView.xAxis.granularity = 1.0
}

this is the condition i am not using groupspace on single bar chart.
please guide me which method i need to override..

[liuxuan30]

take a look at bar chart renderer; the drawDataSet is where it begins.
warning: if you are using other features as well, I suggest you review your design. just imagine how do you draw the bars if only 1 or two on a canvas: more space or more bar width.

I don't know what your problem is, but the image just looks fine.