Recalling Function in Indicators

[MAX]

How can I recall the built-in indicators in a customized indicator?

For example if I want to use the Exponential Moving Average in a new indicator, how can I do it?

Thanks for any answers.

[NinjaTrader_Ray]

Max,

Please see this link - http://www.ninjatrader-support.com/HelpGuide/MovingAverageEMA.html

Ray

[MAX]

I've seen the example and works correcltly, nevertheless I've got a problem to use EMA with my function.

EX:

double value = EMA(Close,Period)[0];
double value2 = EMA(value,Period)[0];

There is an error on the second string.
Does the function accept any parameter?

[NinjaTrader_Ray]

Thanks for the example, no the function only accepts input in the form of an ojbect that implements the IDataSeries interface.

Basically, it only accepts a DataSeries as input.

Input;
High;
Low;
Close;
Volume;
Indicator; etc...

You can createa custom dataseries and pass that value in.

Createa variable under the Variables section.

private IndicatorSeries mySeries;

In the Initialize() method:

mySeries = new IndicatorSeries(this);

In the OnBarUpdate():

mySeries.Set(EMA(Close, Period)[0]);
double value2 = EMA(mySeries, Period)[0];

Alternatively you can do this:

double value2 = (EMA(EMA(Close, Period), Period)[0];

[MAX]

It doesn't work.

In both cases I've got always the same value and the same plot.
There is no difference between:

double value = EMA(Close,Period)[0];

and

double value1 = EMA(EMA(Close, Period), Period)[0];

neither following the DataSeries example.

[NinjaTrader_Ray]

Max,

I can't comment on why you would see two different values since I can't see your entire code however, if you look at the attached sample, you will note that two different values are generated and plotted on a chart.

Ray

[MAX]

How can I open your attachment?

[NinjaTrader_Ray]

It's a zip file. Just click on the link to download it to your PC. Then click on the file to extract the contents.

[MAX]

I know, I mean how to read a .cs file.

Must I import the file into a folder in Ninja?

[NinjaTrader_Ray]

Copy the file to C:\Program Files\NinjaTrader 5\bin\custom\indicator

You can then open it via Tools-->EditNinjaScript and compile, then add to a chart.

Ray