swift - 构造函数图表 Swift 3 上没有 x 值的 LineChartData

Question

我在我的 swift 3.0 xcode 项目中使用 iOS Charts.framework ( https://github.com/danielgindi/Charts )。

我知道“所有数据集构造函数都已更改 - 它们不再采用 x 索引数组”但是如果 LineChartData 不再具有“xVals”参数，我现在如何将字符串放在 x 轴上？ ？以前很容易做到...

let weights: [Double] = self.getWeigths()
let weightDates: [String] = self.getWeightDates()

var yValues : [ChartDataEntry] = [ChartDataEntry]()
    for i in 0 ..< dateLastWeights.count {
        let entry = ChartDataEntry(x: Double(i), y: weights[i])
        yValues.append(entry)
    }
let set: LineChartDataSet = LineChartDataSet(values: yValues, label: "First Set")
var dataSets : [LineChartDataSet] = [LineChartDataSet]()
dataSets.append(set)

let data: LineChartData = LineChartData(xVals: weightDates, dataSets: dataSets)

Answer 1

从 3.0.1 版本开始，您还可以:

lineChart.xAxis.valueFormatter = IndexAxisValueFormatter(values: labels)
lineChart.xAxis.granularity = 1.0