Can I access Public Indicator Variables from Strategy

[rrv1980]

Hello Gurus

I have an Indicator with following public variables defined in the indicator


MyIndicator
{
public double CurrentHI
public double CurrentLO
// Followed by some calcuation to decide the values of these two.
// in the onbarupdate method
// I AM NOT PLOTTING THESE ON THE INDICATOR. I am plotting some other things
} //end My Indicator



In MyStrategy I need to access these two variables for making some decision and my code is looking somehting like following

MyStrategy
{

initialize
{
Add(MyIndicator) // This takes care of plotting part which is working fine
} //end initialize

onbarupdate
{

if (MyIndicator().CurrentHI >= 1000)
{
//do something i.e. Enter long
}//end if

} // end onbarupdate

} //end my strategy

The thing is ..
there is no compilation error and strategy compile perfectly..
but when I run it, Anything Inside of the IF doesnt get executed...
I am wondering why .

Tried this twice with two different indicators.. doesnt work..
HOWEVER.. when I copy paste all the code from indicator into the strategy ... the execution works.. NOW THAT TAKES AWAY the capability to plot the other things I wanna plot..

HELP HELP HELP

Thanks
R

[NinjaTrader_Ray]

Instead of using public variables, use private variables and access them through a public property. In the getter of the property, call the Update() method.

get
{
    Update();
    return currentHi;
}

[rrv1980]

Thanks Ray. I will try that. One Question again.

For each of the variables, I need to define a public property?

This will get pretty lenghty if I have 10 Variables that need to be accessed from outside.. Is there any simpler way?

You guys rock. Amazingly fast response.

[NinjaTrader_Ray]

The other option is storing the data in any IDataSeries implemented series such as DataSeries, IntSeries etc...This still requires a public property but you might not need to call the Update() method.

The issue is when you don't store values as plot values, then NT does not internally trigger OnBarUpdate() if a tick does not come in, such as in a backtest thus you need to call Update() to force the indicator to be updated at the time you access the property value.

[rrv1980]

Great Help!!! Thank you so much!!

[Tight Face]

Hmm, I am trying to do this but where exactly is the Update() method? Am I missing an include?

        [Description("")]
        [Category("Parameters")]		
		public double LegAStdDev
		{
			get 
			{ 
				Update();
				return legAStdDev;
			}
		}

[Tight Face]

Oh wait, is this the Update() method from the IndicatorBase class? I am trying to expose a double from a strategy, so that my indicator can plot it. Essentially avoiding StrategyPlot.

Hmm, I am trying to do this but where exactly is the Update() method? Am I missing an include?

        [Description("")]
        [Category("Parameters")]		
		public double LegAStdDev
		{
			get 
			{ 
				Update();
				return legAStdDev;
			}
		}

[NinjaTrader_JoshP]

http://www.ninjatrader-support.com/HelpGuideV6/Update.html

It is more for NinjaScript Strategies.

[Tight Face]

OK. So I can get values from an indicator, but not from a strategy. Correct?

So the question then becomes, why don't I just put the indicator logic in an indicator. It was originally, but I can't seem to calculate a multi-instrument from within an indicator, which is why I dragged the code in to a strategy where it now works correctly.

[NinjaTrader_JoshP]

From what we can offer support for, yeah. Multi-instrument or multi-time framed indicators will be available in NT7 and then all of these workaround techniques will not be needed anymore. Thank you for your patience in this matter.

[Tight Face]

Glad to hear. Cant wait til the beta is released.

[rrv1980]

Any time frame for NT7 Beta release date?

[rrv1980]

I meant to ask whether it is December 08 or november 08 .. or jan 09 or feb 09.....
I have read that it is scheduled for later in 08... but we are almost in the later 08 part so i am waiting eagerly

[NinjaTrader_JoshP]

End of year time frame is all I can provide.