Using a formula or variable as an input to an Indicator

[nolantx]

I cannot seem to pass a variable as an input to an indicator. Can "IDataSeries" only be Open, High, Low or close ?

[NinjaTrader_Dierk]

Please be specific. What do you want to code?

[nolantx]

I want an an EMA of the average of O+H+L+C multiplied by a variable.

[NinjaTrader_Dierk]

I see. You would need to code your own indicator to achieve that. This indicator would stuff <variable> *(O+H+L+C) into a DataSeries which you then could stuff into EMA. Something like (in pseudo code):

Intilialize()
{
    bufferSeries = new DataSeries(this);
}

OnBarUpdate()
{
    bufferSeries.Set(variable* (Open[0]+High[0]...));
    Value.Set(EMA(bufferSeries, 14)); // 14 period EMA on your series
}

Please check out e.g. ADX implementation for details (e.g. dmPlus series).

[nolantx]

protected override void Initialize()
{
Add(new Plot(Color.Orange, PlotStyle.Line, "Plot0"));
TInput = new DataSeries(this);
}


protected override void OnBarUpdate()
{
TInput.Set((Open[0]+High[0]+Low[0]+Close[0]) *.25) ;
Plot0.Set(EMA(TInput,3));
}

The above is still giving the Errors:

The best overloaded method match for 'NinjaTrader.Data.DataSeries.Set(double)' has some invalid arguments
Argument '1': cannot convert from 'NinjaTrader.Indicator.EMA' to 'double'

[NinjaTrader_Ray]

Should be:

Plot0.Set(EMA(TInput,3)[0]);