Add instrument to chart in STRATEGY Analyzer

[alexstox]

I think this because I set Time Frame for backtesting that is wider than index value has. So, how t avoid this?

[NinjaTrader_CalH]

You should be able to use .Count - 1 and test that against your value you are wanting to use.
Such like the this -

if( myTestValue < SMA(14).Count - 1)
{
     //do something here
}

[alexstox]

I have read about "Count" in Help. Please explaine in your words. Is it just additional tool as CurrentBar?

[NinjaTrader_CalH]

Yes, in way. This is a count of the object that you are attaching it to.

The difference is Count starts at 1 while CurrentBar starts at 0

[alexstox]

So, in my case after CurrentBars[0]<=BarsRequired the solution for indicator value will be
if(MyIndex().Count-1==0) return

[NinjaTrader_CalH]

Have you tested this out?

[alexstox]

Have you tested this out?

No =) I just want to clarify =)

[alexstox]

Well. I tried my expression in strategy. Still this error.
I sighted that it occurs on bar next to what I set in Backtest as Min Bars required=20. Erroe occurs on 21 bar. And in indicator script I set other value=400.
But I think it's not important what value is there. More important to set condition when indicator will check if it has some value.

[NinjaTrader_CalH]

Alexstox,

can you please attach your strategy so that I may test this out on my end?

What instrument are you testing? What time frame? What chart interval are you using?

[alexstox]

There is bars object in strategy script, for which I write
if (CurrentBars[0] <= BarsRequired) return;
There is indicator object in strategy script, for which I can't use "CurrentBars[0] <= BarsRequired"
What can I write for indicator in strategy to check is it have some value or not?!?!?
Because MyIndex() starts to have some value from 1993 year, and bars object starts from 1990. That's why when everything is OK with bars object, MyIndex() still doesn't have any value.

[NinjaTrader_CalH]

Alexstox,

I believe this example is what you are looking for -
http://www.ninjatrader.com/support/f...ad.php?t=33061

This is a way to check if your indicator's plots are valid before accessing them.

[alexstox]

Alexstox,

I believe this example is what you are looking for -
http://www.ninjatrader.com/support/f...ad.php?t=33061

This is a way to check if your indicator's plots are valid before accessing them.

Where to read more about ContainsValue() and "%" (if(CurrentBar % N == 0)

[NinjaTrader_CalH]

First is from dotnetperls which is a good resource -
http://www.dotnetperls.com/containsvalue

the second is from the MSDN site for all .NET and C# related items -
http://msdn.microsoft.com/en-us/library/0w4e0fzs.aspx

[alexstox]

Well. I set in strategy script
if(!MyIndex(MyIndex1).Values[0].ContainsValue(0)) return;
But this still caused error. Maybe because there are no "0" value? How to set "nothing" or "no data" instead of "0".

In indicator I don't know what to set, because I use every bar there and this can't help me
if(CurrentBar % N == 0) EveryNPlot.Set(Median[0]);

[NinjaTrader_Brett]

This checks if you have NOT called a "Set" method on the DataSeries for the current bar your processing. Internally a dummy value does exist and this is what this checks for in the ContainsValue() check. This is coming back true then indicating that something has been set.

We needed to investigate further on the dataSeries "Set" side to see why a value is being set for the current bar.