NinjaScript > Language Reference > Common > System Indicator Methods

System indicator methods require valid input data to function property. Indicator methods can accept the following forms of input data:

Default Input
The default input (Inputs[BarsInProgress]) of the custom indicator, Market Analyzer row or strategy is used if input is not specified.


// Printing the current value of the 10 period SMA of closing prices // using the default input. double value = SMA(10)[0]; Print("The current SMA value is " + value.ToString());

Open, High, Low, Close and Volume can all be used as input for an indicator method.


// Passing in the a price series of High prices and printing out the current value of the // 14 period simple moving average double value = SMA(High, 14)[0]; Print("The current SMA value is " + value.ToString());


// Printing the current value of the 20 period simple moving average of a 14 period RSI // using a data series of closing prices double value = SMA(RSI(Close, 14, 3), 20)[0]; Print("The current SMA value is " + value.ToString());


// Instantiating a new Series<double> object and passing it in as input to calculate // a simple moving average Series<double> myDataSeries = new Series<double>(this); double value = SMA(myDataSeries, 20)[0];


// Passing in the second Bars object held in a multi-instrument and timeframe strategy // The default value used for the SMA calculation is the close price double value = SMA(BarsArray[1], 20)[0]; Print("The current SMA value is " + value.ToString());;

Tip: The input series of an indicator cannot be the hosting indicator itself, as this will cause recursive loops.


// Using the hosting indicator in this way will cause errors with recursive loops double value = SMA(this, 20)[0];