ninjatrader/indicators/MovingAverage.cs

#region Using declarations
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Windows.Media;
using System.Xml.Serialization;
using NinjaTrader.Gui;
#endregion

// Do not change the namespace.
namespace NinjaTrader.NinjaScript.Indicators
{
    public class MovingAverage : Indicator
    {
        private EMA ema;

        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description = "Basic moving average indicator";
                Name = "Moving Average";
                Calculate = Calculate.OnPriceChange;
                IsOverlay = true;
                IsSuspendedWhileInactive = true;
                Period = 20;
                AddPlot(new Stroke(Brushes.Yellow, DashStyleHelper.Solid, 3), PlotStyle.Line, "MA");
            }
            else if (State == State.DataLoaded)
            {
                ema = EMA(Period);
            }
            else if (State == State.Historical)
            {
                SetZOrder(-1); // Display behind bars on chart.
            }
        }

        protected override void OnBarUpdate()
        {
            if (CurrentBar < Period)
                return;

            MA[0] = ema[0];
        }

        public override string DisplayName
        {
            get { return Period + " " + "EMA"; }
        }

        #region Plots
        [Browsable(false)]
        [XmlIgnore]
        public Series<double> MA
        {
            get { return Values[0]; }
        }
        #endregion

        #region Properties
        [Range(1, int.MaxValue), NinjaScriptProperty]
        [Display(Name = "Period", GroupName = "Parameters", Order = 0)]
        public int Period { get; set; }
        #endregion
    }
}

#region NinjaScript generated code. Neither change nor remove.

namespace NinjaTrader.NinjaScript.Indicators
{
    public partial class Indicator : NinjaTrader.Gui.NinjaScript.IndicatorRenderBase
    {
        private MovingAverage[] cacheMovingAverage;
        public MovingAverage MovingAverage(int period)
        {
            return MovingAverage(Input, period);
        }

        public MovingAverage MovingAverage(ISeries<double> input, int period)
        {
            if (cacheMovingAverage != null)
                for (int idx = 0; idx < cacheMovingAverage.Length; idx++)
                    if (cacheMovingAverage[idx] != null && cacheMovingAverage[idx].Period == period && cacheMovingAverage[idx].EqualsInput(input))
                        return cacheMovingAverage[idx];
            return CacheIndicator<MovingAverage>(new MovingAverage(){ Period = period }, input, ref cacheMovingAverage);
        }
    }
}

namespace NinjaTrader.NinjaScript.MarketAnalyzerColumns
{
    public partial class MarketAnalyzerColumn : MarketAnalyzerColumnBase
    {
        public Indicators.MovingAverage MovingAverage(int period)
        {
            return indicator.MovingAverage(Input, period);
        }

        public Indicators.MovingAverage MovingAverage(ISeries<double> input , int period)
        {
            return indicator.MovingAverage(input, period);
        }
    }
}

namespace NinjaTrader.NinjaScript.Strategies
{
    public partial class Strategy : NinjaTrader.Gui.NinjaScript.StrategyRenderBase
    {
        public Indicators.MovingAverage MovingAverage(int period)
        {
            return indicator.MovingAverage(Input, period);
        }

        public Indicators.MovingAverage MovingAverage(ISeries<double> input , int period)
        {
            return indicator.MovingAverage(input, period);
        }
    }
}

#endregion