Reload NinjaScript

[AnotherTrader]

I am developing some custom indicators and a strategy, and need to troubleshoot some behaviour that's unwanted.

When I initially enable the strategy, some of my indicators plot OK, but others don't. When I then "reload NinjaScript" (with the strategy still enabled) all indicators then plot fine.

So prior to "Reload NinjaScript" some indicators don't seem to plot correctly. After "Reload NinjaScript" they do ... And BTW, there are no "Try/Catch" type errors showing up in the log, so I don't think it's related to an error ...

So, what does "Reload NinjaScript" actually do? Understanding this better may help me isolate the problem.

Thanks.

[AnotherTrader]

I am developing some custom indicators and a strategy, and need to troubleshoot some behaviour that's unwanted.

When I initially enable the strategy, some of my indicators plot OK, but others don't. When I then "reload NinjaScript" (with the strategy still enabled) all indicators then plot fine.

So prior to "Reload NinjaScript" some indicators don't seem to plot correctly. After "Reload NinjaScript" they do ... And BTW, there are no "Try/Catch" type errors showing up in the log, so I don't think it's related to an error ...

So, what does "Reload NinjaScript" actually do? Understanding this better may help me isolate the problem.

Thanks.

Further to the above, does "Reload NinjaScript" re-run all Initialize(), OnStartUp(), OnBarUpdate(), etc methods in the same way that they are run when "enabling" a strategy?

And also, the effect seems to be different if I enable from the Control Center's Strategy tab (which is where I get the behaviour observed above) versus enabling from the chart's strategy window (where the indicators all load perfectly first time)... any ideas what this might be?

[NinjaTrader_Bertrand]

Correct, it would rerun through those methods - basically creating / applying a fresh instance of the script you're running. Are you running a single or multi series script here where you see issues?

[AnotherTrader]

Correct, it would rerun through those methods - basically creating / applying a fresh instance of the script you're running. Are you running a single or multi series script here where you see issues?

Hi, Bertrand
The script is multi-series, but the observed behaviour still occurs even when I completely comment out any code not related to series 0.

[NinjaTrader_Bertrand]

Thanks, so you commented out the adding of the series itself as well under Initialize()?

[AnotherTrader]

Thanks, so you commented out the adding of the series itself as well under Initialize()?

Yes, commented out Add(), and OnBarUpdate processing for the additional BarsInProgress, and any DataSeries referencing other than series 0.

[NinjaTrader_Bertrand]

Ok, thanks.

Would you see this as well when replacing the indicator calls by standard NT indicator methods, such as the SMA or RSI?

[AnotherTrader]

Ok, thanks.

Would you see this as well when replacing the indicator calls by standard NT indicator methods, such as the SMA or RSI?

If I replace custom indicator by SMA, then the indicator plots correctly immediately upon enabling within the Control Center strategy tab (as opposed to requiring a "Reload NinjaScript" before plotting correctly).

[NinjaTrader_Matthew]

At this point, I'd suggest doing some additional debugging and stepping through each state of your custom indicator to determine exactly what value is changing before and after it is reloaded. You can always do this by using print statements, but for this type of debugging, you may consider using Visual Studio for more advanced debugging.

Here is a quick video that walks you through debugging of our ADX indicator:

http://www.ninjatrader.com/support/forum/showpost.php?p=316288&postcount=11

Written instructions for the setup can be found here:

http://www.ninjatrader.com/support/helpGuides/nt7/visual_studio_debugging.htm

Please feel free to share your results with this thread or let us know if we can help clarify any of your findings.