Indicator of indicators

[StealthM93]

Hello Support,

I would like to create a single indicator that uses two SMA plots. How do I go about this? I tried using the Indicator Wizard, but that doesn't have an option for other indicators. I know how to create a Strategy with multiple indicators but I want this new custom indicator to be available to different strategies. So, rather than duplicate code, I would like to centralize the logic into a single indicator.

Sample code would be greatly appreciated!

Thanks!
Matt

PS: I did a bit of searching in the forums but I wasn't able to find anything. Sorry if this has been asked before; I'm sure it has.

[NinjaTrader_Kate]

Hello StealthM93,

Thank you for your reply.

Just add two plots to your indicator, one for each SMA Plot. Once you have that, simply call the SMA twice, and each time you call it with different parameters, assign the latest value of the called SMA to one of the two plots.

Here's a very simple example script that will plot 2 SMAs, with user inputs for the Period for each of the two.

namespace NinjaTrader.NinjaScript.Indicators
{
    public class DualSMAExample : Indicator
    {
        private SMA SMA1;
        private SMA SMA2;

        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description                                    = @"Enter the description for your new custom Indicator here.";
                Name                                        = "DualSMAExample";
                Calculate                                    = Calculate.OnBarClose;
                IsOverlay                                    = true;
                DisplayInDataBox                            = true;
                DrawOnPricePanel                            = true;
                DrawHorizontalGridLines                        = true;
                DrawVerticalGridLines                        = true;
                PaintPriceMarkers                            = true;
                ScaleJustification                            = NinjaTrader.Gui.Chart.ScaleJustification.Right;
                //Disable this property if your indicator requires custom values that cumulate with each new market data event.
                //See Help Guide for additional information.
                IsSuspendedWhileInactive                    = true;
                SMA1Period                    = 14;
                SMA2Period                    = 25;
                AddPlot(Brushes.Orange, "SMA1Plot");
                AddPlot(Brushes.RoyalBlue, "SMA2Plot");
            }
            else if (State == State.DataLoaded)
            {
                SMA1 = SMA(SMA1Period);
                SMA2 = SMA(SMA2Period);
            }
        }

        protected override void OnBarUpdate()
        {
            SMA1Plot[0] = SMA1[0];
            SMA2Plot[0] = SMA2[0];
        }

        #region Properties
        [NinjaScriptProperty]
        [Range(1, int.MaxValue)]
        [Display(Name="SMA1Period", Order=1, GroupName="Parameters")]
        public int SMA1Period
        { get; set; }

        [NinjaScriptProperty]
        [Range(1, int.MaxValue)]
        [Display(Name="SMA2Period", Order=2, GroupName="Parameters")]
        public int SMA2Period
        { get; set; }

        [Browsable(false)]
        [XmlIgnore]
        public Series<double> SMA1Plot
        {
            get { return Values[0]; }
        }

        [Browsable(false)]
        [XmlIgnore]
        public Series<double> SMA2Plot
        {
            get { return Values[1]; }
        }
        #endregion

    }
}​

Please let us know if we may be of further assistance to you.

[StealthM93]

Awesome, thank you, Kate!