我正在尝试在条形图上创建一个lineChart。到目前为止,我有以下代码:
class AnalysisViewController: UIViewController, ChartViewDelegate {
func setChart(xValues: [String], valuesBarChart: [Double], valuesLineChart: [Double]) {
barChartView.descriptionText = ""
barChartView.noDataText = "You need to provide data for the chart."
var yValsBarChart: [BarChartDataEntry] = []
var yValsLineChart : [ChartDataEntry] = [ChartDataEntry]()
for i in 0..<xValues.count {
yValsBarChart.append(BarChartDataEntry(value: valuesBarChart[i], xIndex: i))
yValsLineChart.append(ChartDataEntry(value: valuesLineChart[i] - 1, xIndex: i))
}
let lineChartDataSet = LineChartDataSet(yVals: yValsLineChart, label: nil)
let barChartDataSet = BarChartDataSet(yVals: yValsBarChart, label: nil)
let data: CombinedChartData = CombinedChartData(xVals: xValues)
data.barData = BarChartData(xVals: xValues, dataSets: [barChartDataSet])
data.lineData = LineChartData(xVals: xValues, dataSets: [lineChartDataSet])
barChartView.data = data
barChartView.leftAxis.customAxisMin = 0
UniversalStatic.data.generateColoursForGraph(budgetName.count)
barChartDataSet.colors = UniversalStatic.data.colourArrayForGraph
setDesignChart()
}
}
我在终端上收到以下错误:
无法转换类型&#39; Charts.CombinedChartData&#39;的值(0x3d5d70)到&#39; Charts.BarChartData&#39; (0x3cfc54)。
以及:
我不知道自己做错了什么,因为我还没有触及过BarChartView&#39;出现错误的地方。
任何帮助将不胜感激:)