用SCIChart平滑直线数据

Question

是否有可能自动平滑线条图的数据，使其显示为优美的曲线，而不是参差不齐的向上向下的线条？还是需要手动操作我的数据？

编辑：添加了一个锯齿状线图的例子。

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。您可以在这里看到一个例子：

iOS自定义系列样条线实例

这需要创建一个自定义系列(上面的示例以及托管在GitHub上提供了完整的源代码)。

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/