Passing a value to an indicator

[ronharrow]

Is it possible in NinjaScript to pass a value into an indicator for the indicator to use in its logic? If so, how is this done?

[NinjaTrader_Jesse]

Hello,

Yes this is possible to do, an example of this would be the SMA indicator that requires a Period.

For this, an easy example is actually to view the SMA indicators code to see how this is done.

Please go to Tools -> Edit NinjaScript -> Indicator -> SMA

Once the code is open, there are a few parts you need to make a parameter.

The first place to look is the variables section, look for the line:

private int		period	= 14;

This is the private variable for the period which defines its default value and is a place holder.

Now look near the bottom in the Properties section for the following:

[Description("Numbers of bars used for calculations")]
[GridCategory("Parameters")]
public int Period
{
	get { return period; }
	set { period = Math.Max(1, value); }
}

This is a public property which will be in the ( ) of the indicator when you call it.

Now in the code for this indicator anywhere you need to use the period input, you would use Period

From a strategy you would call this indicator by name or IndicatorName(13) the 13 would be a period because now this has a Period input.

I look forward to being of further assistance.