DirectionalMovementSystem


Summary

Welles Wilder's Directional Movement Indicator calculation

Remarks

Welles Wilder's Directional Movement System uses three indicators to determine whether the market is trending, and in which direction, and sends trading signals accordingly. A buy signal occurs when +DI line crosses above -DI line. A sell signal occurs when -DI line crosses below +DI line.

Syntax

public interface DirectionalMovementSystem

Members

NameTypeSummary
ADX PropertyThe Average Directional Movement Index (ADX) indicates whether the market is trending or ranging.
DIMinus PropertyThe Negative Direction Indicator (-DI) indicates downward trend movement;
DIPlus PropertyThe Positive Direction Indicator (+DI) indicates upward trend movement;

Example 1

//...
[Indicator(IsOverlay = true)]
public class SampleADX : Indicator
{
    private DirectionalMovementSystem _dms;
    private double _dIplus;
    private double _dIminus;
    [Parameter("ADX Period", DefaultValue = 14)]
    public int Period { get; set; }
    [Output("Buy", PlotType = PlotType.Points, Color = Colors.Green, Thickness = 4)]
    public IndicatorDataSeries Buy { get; set; }
    [Output("Sell", PlotType = PlotType.Points, Color = Colors.Red, Thickness = 4)]
    public IndicatorDataSeries Sell { get; set; }
    protected override void Initialize()
    {
        _dms = Indicators.DirectionalMovementSystem(Period);
    }
    public override void Calculate(int index)
    {
        _dIplus = _dms.DIPlus[index];
        _dIminus = _dms.DIMinus[index];
        if (_dIminus > _dIplus)
        {
            Sell[index] = MarketSeries.Close[index] + Symbol.PointSize*100;
        }
        else
        {
            Buy[index] = MarketSeries.Close[index] - Symbol.PointSize*100;
        }
    }
}
//...