The below image demonstrates using the trendline layer with the XamFinancialChart. There are a variety of trendline types to choose from. You can Adjust this by using the trendline drop down currently displaying QuadraticFit.
Note: these properties apply to all chart panes and the same trend line type will be applied to all chart panes.
The following demonstrates how to set the TrendLineType through code:
In XAML:
<ig:XamFinancialChart ItemsSource="{Binding}"
TrendLineType="QuinticFit"
TrendLineBrushes="Green"
TrendLineThickness="2" />In Visual Basic:
Dim chart as New XamFinancialChart()
chart.TrendLineType = Infragistics.Controls.Charts.TrendLineType.QuinticFit
chart.TrendLineBrushes = new Infragistics.BrushCollection();
Dim brush As SolidColorBrush = new SolidColorBrush()
brush.Color = Colors.Green
chart.TrendLineBrushes.Add(brush)
chart.TrendLineThickness = 2In C#:
var chart = new XamFinancialChart();
chart.TrendLineType = Infragistics.Controls.Charts.TrendLineType.QuinticFit;
chart.TrendLineBrushes = new Infragistics.BrushCollection();
SolidColorBrush brush = new SolidColorBrush();
brush.Color = Colors.Green;
chart.TrendLineBrushes.Add(brush);
chart.TrendLineThickness = 2;