Question

好吧，我正在尝试制作Stacked Bar Charts。（Swift，来自cocoapod的iOS-Charts。）在这些条件下......

我有1个字符串数组和2个双数组：

1）monthArray = {"1","2","3".....,"12"} //for xAxis Label

2）finalBorrowArray = {0,0,500.0,0,200.0...etc}

3）finalLendArray = {0,0,500.0,800.0,...etc}

以下是一些Swift代码：

func setChartData(count:Int, range:UINT32) {

      var dataEntries: [ChartDataEntry] = []
      var dataEntries2: [ChartDataEntry] = []

      for i in 0..<finalBorrowArray.count {

          let dataEntry = BarChartDataEntry(x: Double(i), yValues: 
          [finalBorrowArray[i]])
          dataEntries.append(dataEntry)
      }

      for i in 0..<finalLendArray.count {

          let dataEntry = BarChartDataEntry(x: Double(i), yValues: 
          [finalLendArray[i]])
         dataEntries2.append(dataEntry)
      }

      let yVals = (0..<count).map { (i) -> BarChartDataEntry in

          @@@@@@@@@@@@@@@PROBLEM@@@@@@@@@HELP@@@@@@@@@@@@@
          return ?
      }

      }

let set = BarChartDataSet(values:yVals, label: "")
set.drawIconsEnabled = false
set.colors = [ChartColorTemplates.pastel()[0], ChartColorTemplates.pastel()[3]]

set.stackLabels = ["(+)", "(-)"]

let data = BarChartData(dataSet: set)
data.setValueFont(.systemFont(ofSize: 10, weight: 20))
data.setValueFormatter(DefaultValueFormatter(formatter: formatter))
data.setValueTextColor(.black)

barChart.fitBars = true
barChart.data = data

所以我认为我必须yVal为BarChartDataEntry 让yVals。（也许..？）

但我不知道如何获得2 yAxis ...任何帮助或想法的椭圆？

提前致谢..！

Answer 1

我自己解决了..

我使用另外BarChartDataEntry组合了2个数组，而不是yVals。

以下是代码：

var finalEntries : [BarChartDataEntry] = []

    for i in 0..<finalLendArray.count {

        let Entry = BarChartDataEntry(x: Double(i), yValues: [finalBorrowArray[i], finalLendArray[i]])
        finalEntries.append(Entry)
    }

    let set = BarChartDataSet(values:finalEntries, label: "")

iOS图表使Stacked BarChart具有2个数组

1 个答案: