使用 SCIChart 平滑线数据

Question

是否可以自动平滑折线图的数据，使其显示为优美优美的曲线而不是参差不齐的上下线条？还是我需要手动操作我的数据？

编辑： 添加了锯齿线图示例

sciChartSurface = SCIChartSurface()
view.addSubview(sciChartSurface)
sciChartSurface.translatesAutoresizingMaskIntoConstraints = false
sciChartSurface.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
sciChartSurface.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
sciChartSurface.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
sciChartSurface.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true

let xAxis = SCIDateTimeAxis()
xAxis.visibleRange = SCIDateRange(dateMin: Date().addingTimeInterval(-86400), max: Date().addingTimeInterval(2 * 86400))
xAxis.growBy = SCIDoubleRange(min: SCIGeneric(0.1), max: SCIGeneric(0.1))
xAxis.textFormatting = "MMM d"
sciChartSurface?.xAxes.add(xAxis)

let yAxis = SCINumericAxis()
yAxis.textFormatting = "%.1f"
yAxis.axisTitle = "Temperature"
sciChartSurface?.yAxes.add(yAxis)

lineDataSeries = SCIXyDataSeries(xType: .dateTime, yType: .double)
lineDataSeries.appendX(SCIGeneric(Date().addingTimeInterval(-86400)), y: SCIGeneric(28))
lineDataSeries.appendX(SCIGeneric(Date()), y: SCIGeneric(30))
lineDataSeries.appendX(SCIGeneric(Date().addingTimeInterval(86400)), y: SCIGeneric(26))
lineDataSeries.appendX(SCIGeneric(Date().addingTimeInterval(2 * 86400)), y: SCIGeneric(28))

let series = SCIFastLineRenderableSeries()
series.dataSeries = lineDataSeries
series.strokeStyle = SCISolidPenStyle(colorCode: 0xFF279B27, withThickness: 1.0)
sciChartSurface.renderableSeries.add(series)

Answer 1

SciChart 通过自定义系列支持一种样条插值。你可以在这里看到一个例子：

iOS Custom Series Spline Line Example

这需要创建一个自定义系列（上面的示例中提供了完整的源代码，hosted on GitHub here。）

编辑：更新

Scichart iOS/Android 现在支持开箱即用的样条线

https://www.scichart.com/example/ios-spline-line-chart/

使用 SCIChart 平滑线数据

Smoothing line data using SCIChart

scichart