How to align labels bottom of the dots

[malierbas]

  `let chart = LineChartView()
    chart.border(color: .init(named: "Grey3"), width: 1, radius: 8)
    chart.isUserInteractionEnabled = false
    chart.legend.enabled = false
     
    // others
    let desc = Description()
    desc.enabled = false
    desc.text = " "
    chart.chartDescription = desc
    chart.rightAxis.enabled = false
    
    // entries
    var entries: [ChartDataEntry] = []
    var colors: [NSUIColor] = []
    var dats: [String] = []
    
    // data set
    let set = LineChartDataSet(entries: entries)
    set.drawIconsEnabled = false
    set.drawCircleHoleEnabled = false
    set.colors = colors
    set.circleColors = colors
    set.mode = .horizontalBezier
    let data = LineChartData(dataSet: set)
    chart.data = data
    
    // setup y
    let dFormatter = DayAxisValueFormatter()
    dFormatter.months = dats
    chart.xAxis.valueFormatter = dFormatter
    chart.xAxis.labelPosition = .bottom
    chart.xAxis.labelCount = dats.count
    chart.xAxis.granularity = 1
    chart.xAxis.centerAxisLabelsEnabled = true
    
    chart.xAxis.yOffset = 5
    chart.xAxis.spaceMin = 5
    chart.xAxis.spaceMax = 5
    chart.setExtraOffsets(left: 10, top: 5, right: 10, bottom: 5)
    chart.minOffset = 20`
    
    
    My value formatter;
    `public class DayAxisValueFormatter: AxisValueFormatter {
weak var chart: BarLineChartViewBase?
var months = ["Jan", "Feb", "Mar",
              "Apr", "May", "Jun",
              "Jul", "Aug", "Sep",
              "Oct", "Nov", "Dec"]


public func stringForValue(_ value: Double, axis: AxisBase?) -> String {
    print("string for value data: ", value)
    let days = Int(value)
    let year = determineYear(forDays: days)
    let month = determineMonth(forDayOfYear: days)
    
    let monthName = months[month % months.count]
    let yearName = "\(year)"
    
    if let chart = chart,
        chart.visibleXRange > 30 * 6 {
        return monthName + yearName
    } else {
        let dayOfMonth = determineDayOfMonth(forDays: days, month: month + 12 * (year - 2016))
        var appendix: String
        
        switch dayOfMonth {
        case 1, 21, 31: appendix = "st"
        case 2, 22: appendix = "nd"
        case 3, 23: appendix = "rd"
        default: appendix = "th"
        }
        
        return dayOfMonth == 0 ? "" : monthName
    }
}


private func days(forMonth month: Int, year: Int) -> Int {
    // month is 0-based
    switch month {
    case 1:
        var is29Feb = false
        if year < 1582 {
            is29Feb = (year < 1 ? year + 1 : year) % 4 == 0
        } else if year > 1582 {
            is29Feb = year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)
        }
        
        return is29Feb ? 29 : 28
        
    case 3, 5, 8, 10:
        return 30
        
    default:
        return 31
    }
}

private func determineMonth(forDayOfYear dayOfYear: Int) -> Int {
    var month = -1
    var days = 0
    
    while days < dayOfYear {
        month += 1
        if month >= 12 {
            month = 0
        }
        
        let year = determineYear(forDays: days)
        days += self.days(forMonth: month, year: year)
    }
    
    return max(month, 0)
}

private func determineDayOfMonth(forDays days: Int, month: Int) -> Int {
    var count = 0
    var daysForMonth = 0
    
    while count < month {
        let year = determineYear(forDays: days)
        daysForMonth += self.days(forMonth: count % 12, year: year)
        count += 1
    }
    
    return days - daysForMonth
}

private func determineYear(forDays days: Int) -> Int {
    switch days {
    case ...366: return 2016
    case 367...730: return 2017
    case 731...1094: return 2018
    case 1095...1458: return 2019
    default: return 2020
    }
}

}`