iOS 图表条形组合图表答案

【问题标题】：iOS Charts Bar-Bar Combined-ChartsiOS 图表条形组合图表
【发布时间】：2020-02-10 22:06:49
【问题描述】：

我正在使用 iOS charts 库并尝试制作条形组合图表。

我不确定这是否可行，但我没有看到有关文档的任何限制，所以我假设有这样的选项。

这是我用来添加组合图表的代码：

func createIntegratedChartForStat(stat:String, chart:CombinedChartView){
    chart.noDataText = "You need to provide data for the " + stat + " chart"

    var dataEntriesTotal: [BarChartDataEntry] = []
    var dataEntriesGood: [BarChartDataEntry] = []
    for i in 0..<gamesOrder.count {
        let outFromStat = playersFullData["b"]![stat]![i]
        var splittedData = outFromStat.split(separator: "/")
        let dataEntryTotal = BarChartDataEntry(x: Double(i), y: Double(splittedData[0])!)
        let dataEntryGood = BarChartDataEntry(x: Double(i), y: Double(splittedData[1])!)
        dataEntriesTotal.append(dataEntryTotal)
        dataEntriesGood.append(dataEntryGood)
    }

    let chartDataSetTotal = BarChartDataSet(values: dataEntriesTotal, label: stat + " Attempts")
    let chartDataSetGood = BarChartDataSet(values: dataEntriesGood, label: stat + " Successful")

    let chartData = CombinedChartData(dataSets: [chartDataSetTotal, chartDataSetGood])

    chart.data = chartData
}

我得到的只是这个：

如果我触摸图表，则会出现以下错误：

[未知进程名] CGAffineTransformInvert：奇异矩阵。

可以这样做还是我错过了什么？

【问题讨论】：

标签： swift charts swift3 ios-charts

【解决方案1】：

有可能，我只是错误地将数据添加到组合图表中。添加更新的代码：

func createIntegratedChartForStat(stat:String, chart:CombinedChartView){
    chart.noDataText = "You need to provide data for the " + stat + " chart"

    var dataEntriesTotal: [BarChartDataEntry] = []
    var dataEntriesGood: [BarChartDataEntry] = []
    for i in 0..<gamesOrder.count {
        let outFromStat = playersFullData["b"]![stat]![i]
        var splittedData = outFromStat.split(separator: "/")
        let dataEntryTotal = BarChartDataEntry(x: Double(i), y: Double(splittedData[0])!)
        let dataEntryGood = BarChartDataEntry(x: Double(i), y: Double(splittedData[1])!)
        dataEntriesTotal.append(dataEntryTotal)
        dataEntriesGood.append(dataEntryGood)
    }

    let chartDataSetTotal = BarChartDataSet(values: dataEntriesTotal, label: stat + " Attempts")
    chartDataSetTotal.colors = [NSUIColor .blue]
    let chartDataSetGood = BarChartDataSet(values: dataEntriesGood, label: stat + " Successful")
    chartDataSetGood.colors = [NSUIColor .green]

    let chartData = BarChartData(dataSets: [chartDataSetTotal, chartDataSetGood])

    let data: CombinedChartData = CombinedChartData()
    data.barData = chartData
    chart.data = data
}

【讨论】：