Ratio Filter | WPF Chart Documentation

Ratio Filter

The Ratio filter performs a vector division of two Time Series, basically dividing series A by series B.

This is useful when you want to visualize the price of asset A in terms of asset B. In the example below, we plot Bitcoin, Litecoin and DogeCoin on a SciChartSurface. At the click of a button we apply the Ratio Filter to plot Doge/BTC.

Ratio Filter	Copy Code
// Assuming you have populated two data-series with Bitcoin and Dogecoin historical prices _btcDataSeries = new XyDataSeries<DateTime,double>() { SeriesName = "Bitcoin" }; _dogecoinDataSeries = new XyDataSeries<DateTime, double>() { SeriesName = "DogeCoin" }; // Create the Ratio Filter. SeriesA / SeriesB var ratioFilter = new RatioFilter<DateTime, double>(_dogecoinDataSeries, _btcDataSeries); ratioFilter.FilteredDataSeries.SeriesName = "DogeCoin/BTC"; // Visualize as a Line Series sciChart.RenderableSeries.Add(new FastLineRenderableSeries() { DataSeries = ratioFilter.FilteredDataSeries, Stroke = Colors.Lime, StrokeThickness = 2, });

Ratio Filter

Copy Code

// Assuming you have populated two data-series with Bitcoin and Dogecoin historical prices
_btcDataSeries = new XyDataSeries<DateTime,double>() { SeriesName = "Bitcoin" };
_dogecoinDataSeries = new XyDataSeries<DateTime, double>() { SeriesName = "DogeCoin" };
       
// Create the Ratio Filter. SeriesA / SeriesB       
var ratioFilter = new RatioFilter<DateTime, double>(_dogecoinDataSeries, _btcDataSeries);
ratioFilter.FilteredDataSeries.SeriesName = "DogeCoin/BTC";
// Visualize as a Line Series
sciChart.RenderableSeries.Add(new FastLineRenderableSeries()
{
    DataSeries = ratioFilter.FilteredDataSeries,
    Stroke = Colors.Lime,
    StrokeThickness = 2,
});