Using SMA Indicator on two exposed doubles

[swcooke]

I've created a simple Indicator that exposes two double Series called foo and bar. I am trying to add an SMA to a chart and reference one of these however, they do not show up, Here is the Indicator that exposes the doubles:

    public class SampleDoubleSeries : Indicator
    {
        private Series<double> foo;
        private Series<double> bar;

        protected override void OnStateChange()
        {
            if(State == State.SetDefaults)
            {
                Name                    = "Sample Double series";
                Calculate                = Calculate.OnBarClose;
                IsOverlay                = true;
            }

            else if(State == State.Configure)
            {
                foo            = new Series<double>(this);
                bar            = new Series<double>(this);
            }
        }

        protected override void OnBarUpdate()
        {
            if(CurrentBar < 0) return;
            foo[0] = Close[0];
            bar[0] = Open[0];
        }

        #region Properties
        [Browsable(false)]
        [XmlIgnore]
        public Series<double> Foo
        {
            get { return foo; }    
        }

        [Browsable(false)]
        [XmlIgnore]        
        public Series<double>  Bar
        {
            get { return bar; }    
        }
        #endregion
    }

When I try to reference my SampleDoubleSeries Indicator from the SMA preferences window, I don't see a way to choose either one of my series names foo or bar. Any suggestions would be appreciated.

[NinjaTrader_Jim]

Hello swooke,

Thanks for your post.

Exposing a Series object will not make it appear on the property grid. This would be used if you would like to access the Series object as MyInstantiatedSampleDoubleSeries.Foo[0] or MyInstantiatedSampleDoubleSeries.Bar[0] from a hosting script.

If you want to access a Series as the input series for another indicator, a plot must be used.

AddPlot - https://ninjatrader.com/support/help...8/?addplot.htm

Note that you can take the same approach as you are to expose a public Series object, but have the public Series object return the Values[] associated with that plot. The MACD indicator can be used as a reference for how this is done.

Please let us know if you have any additional questions.