Indicators in Strategy Analyzer

[GrumpyTrader]

Custom indicators when I add them to charts seem to work fine, but when I add them to a strategy using AddChartIndicator and run a back test in the Strategy Analyzer I get errors when I try to access bar information and receive "object reference not set to an instance of an object".

Here is an example:

[-=Edge=-]

Custom indicators when I add them to charts seem to work fine, but when I add them to a strategy using AddChartIndicator and run a back test in the Strategy Analyzer I get errors when I try to access bar information and receive "object reference not set to an instance of an object".

Try adding

 [COLOR=#080808]IsInstantiatedOnEachOptimizationIteration[/COLOR][COLOR=#000000] = [/COLOR][COLOR=#0000ff]true[/COLOR][COLOR=#000000];[/COLOR]

to the State.Defaults of the Strategy and and see if that helps..

[GrumpyTrader]

Hi Edge,
That actually didn't work. Not sure what else to try.

[GrumpyTrader]

After debugging through this it seems the issue is where an indicator calls another indicator from a strategy.

To reproduce the problem:
a) import my example (include an indicator Gt_Vwap and a strategy _Tmp ) The only thing the strategy does is call AddChartIndicator (Gt_Vwap)
b) Run a back test in Strategy Analyzer on _Tmp strategy with the display set to Summary (should run fine)
c) After back test is completed switch to the Chart display in Strategy Analyzer ( you should see a bunch of errors come through the Control Center Log)

To correct the problem:
a) Modify Gt_Vwap indicator to use the Volume[0] object instead of VOL()[0] indicator
b) Solves the errors. Clearly they both should work.

[NinjaTrader_Jesse]

Hello,

I was able to use the provided example to create a test that demonstrates the issue explained in this post. I have submitted this to development for review, If I have any further updates I will post them here.

I look forward to being of further assistance.