ninjatrader/strategies/trin/TRINBot.cs

#region Using declarations
using NinjaTrader.Data;
using NinjaTrader.NinjaScript.Indicators;
using System.ComponentModel.DataAnnotations;
#endregion

namespace NinjaTrader.NinjaScript.Strategies
{
    public class TRINBot : Strategy
    {
        private RSI rsi;
        private SMA longTermTrend;
        
        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Name = "TRIN Bot";
                Description = @"Taken from chapter 12 of Short Term Trading Strategies That Work";
                Calculate = Calculate.OnBarClose;
                EntriesPerDirection = 1;

                LongTermTrendPeriod = 200;
                RSIPeriod = 2;
                RSISmoothing = 1;
                RSIEntryThreshold = 50;
                RSIExitThreshold = 65;
                TRINEntryThreshold = 1.0;
                DaysAboveThreshold = 3;
            }
            else if (State == State.Configure)
            {
                AddDataSeries("^TRIN", BarsPeriodType.Day, 1);
            }
            else if (State == State.DataLoaded)
            {
                rsi = RSI(RSIPeriod, RSISmoothing);
                longTermTrend = SMA(LongTermTrendPeriod);
            }
        }

        protected override void OnBarUpdate()
        {
            if (BarsInProgress != 0)
                return;

            if (CurrentBar < LongTermTrendPeriod || CurrentBars[1] < DaysAboveThreshold)
                return;

            if (Close[0] > longTermTrend[0] && rsi[0] < RSIEntryThreshold)
            {
                for (int i = 0; i < DaysAboveThreshold; i++)
                {
                    if (Closes[1][i] <= TRINEntryThreshold)
                        return;
                }

                EnterLong();

            }
            else if (rsi[0] > RSIExitThreshold)
                ExitLong();
        }

        public override string DisplayName
        {
            get { return Name; }
        }

        [NinjaScriptProperty]
        [Display(Name = "Long-Term Trend Period", GroupName = "TRIN Bot", Order = 1)]
        public int LongTermTrendPeriod { get; set; }

        [NinjaScriptProperty]
        [Display(Name = "RSI Period", GroupName = "TRIN Bot", Order = 2)]
        public int RSIPeriod { get; set; }

        [NinjaScriptProperty]
        [Display(Name = "RSI Smoothing", GroupName = "TRIN Bot", Order = 3)]
        public int RSISmoothing { get; set; }

        [NinjaScriptProperty]
        [Display(Name = "RSI Entry Threshold", GroupName = "TRIN Bot", Order = 4)]
        public int RSIEntryThreshold { get; set; }

        [NinjaScriptProperty]
        [Display(Name = "RSI Exit Threshold", GroupName = "TRIN Bot", Order = 5)]
        public int RSIExitThreshold { get; set; }

        [NinjaScriptProperty]
        [Display(Name = "TRIN Entry Threshold", GroupName = "TRIN Bot", Order = 6)]
        public double TRINEntryThreshold { get; set; }

        [NinjaScriptProperty]
        [Display(Name = "Days Above Threshold", GroupName = "TRIN Bot", Order = 7)]
        public int DaysAboveThreshold { get; set; }

    }
}