iOS 图表、水平条不准确

Question

我正在尝试获取具有实时数据变化的水平条形图。不过我遇到了这个问题。

如您所见，所有的条形图都不准确，除了最长的条形图。

以下是我的代码。

class HorizontalBarChartViewController: UIViewController {

var values: [Double] = [0.0, 0.0, 0.0, 0.0, 0.0]
var moods = ["Annoiato", "Ansioso", "Stanco", "Triste", "Altro"]

@IBOutlet weak var chart: HorizontalBarChartView!

func updateCharts() {
    var chartDataEntry = [BarChartDataEntry]()

    for i in 0..<values.count {
        let value = BarChartDataEntry(x: Double(i), y: values[i])
        chartDataEntry.append(value)
    }

    let chartDataSet = BarChartDataSet(values: chartDataEntry, label: "Sigarette fumate")
    chartDataSet.drawValuesEnabled = false
    chartDataSet.colors = [NSUIColor.green]

    let chartMain = BarChartData()
    chartMain.barWidth = 0.1

    chartMain.addDataSet(chartDataSet)
    chart.animate(yAxisDuration: 0.5)
    chart.data = chartMain
}

func configureCharts() {
    chart.xAxis.valueFormatter = IndexAxisValueFormatter(values: moods)
    chart.xAxis.granularity = 1.0
    chart.xAxis.labelPosition = .bottom
    chart.xAxis.drawGridLinesEnabled = false

    chart.leftAxis.enabled = false
    chart.rightAxis.granularity = 1.0
    chart.rightAxis.axisMinimum = 0.0


    guard let description = chart.chartDescription else {return}
    description.text = ""
}

}

为了增加值，我有 5 个函数，每个函数对应每个值：

    @IBAction func *nameValue*Button(_ sender: UIButton) {
    values[*index*]+=1
    updateCharts()
    configureCharts()
}

如何将条形与右侧 y 轴的正确网格线相匹配？

Answer 1

这是解决方案。请检查：

func configureCharts() {
    chart.xAxis.valueFormatter = IndexAxisValueFormatter(values: moods)
    chart.xAxis.granularity = 1.0
    chart.xAxis.labelPosition = .bottom
    chart.xAxis.drawGridLinesEnabled = false

    chart.rightAxis.granularity = 1.0
    chart.rightAxis.axisMinimum = 0.0
    chart.leftAxis.axisMinimum = 0.0    //here's the missing line

    guard let description = chart.chartDescription else {return}
    description.text = ""
}

Answer 2

let leftAxis = chartView.leftAxis
leftAxis.drawTopYLabelEntryEnabled = true
leftAxis.drawAxisLineEnabled = true
leftAxis.drawGridLinesEnabled = true
leftAxis.granularityEnabled = false
leftAxis.axisLineColor = .green
leftAxis.labelTextColor = .black
// leftAxis.setLabelCount(6, force: true)
leftAxis.axisMinimum = 0.0
leftAxis.axisMaximum = 3000.0
let highI = 2290.0
let highIncome = ChartLimitLine()
highIncome.limit = highI
highIncome. lineColor = .red
// highIncome. valueTe = .blue
highIncomeAverageLine.label = "Average"
highIncomeAverageLine.labelPosition = .bottomLeft
leftAxis.addLimitLine(highIncomeAverageLine)

iOS 图表、水平条不准确

iOS Charts, Horizontal bars not accurate

bar-chart

ios

swift

ios-charts