RoundToTickSize() dies with Index was outside the bounds of the array exception.

[ren37]

The very old exception comes again. And this is really annoying.
This happened inside OnRender()
Are you guys gonna to do something with your RoundToTickSize()?!
Could you check the array size, please?!

platformsupport@ didn't help and asked for samples to reproduce this sporadic bug
That's why I'm posting here.
What do you think, guys? Should Ninja fix their bugs ASAP or should to wait for samples with eyes closed?


Trace:

2018-07-09 19:23:56:845 ERROR: Thread: 21 Hash: 16346871 NinjaTrader.NinjaScript.Strategies.DOMPressure2 1.0.1 beta State: Realtime Exception: Index was outside the bounds of the array. Source: NinjaTrader.Core Stack: at NinjaTrader.NinjaScript.NinjaScriptBase.get_Instru ment() at MZpack.NT8.CoreIndicator.YidOVJiZtFKnKarNvtO(Objec t ) at MZpack.NT8.CoreIndicator.get___Instrument() at MZpack.NT8.CoreIndicator.RoundToTickSize(Double price) at MZpack.NT8.FootprintBar.RenderFootprint(Int32 footprint, FootprintRenderArgs e) at MZpack.NT8.FootprintBar.Render(RenderArgs e) at MZpack.FootprintBarsBase.qXY1t4eibo4drgkyJ6e(Objec t , Object ) at MZpack.FootprintBarsBase.Render(RenderArgs e) at MZpack.FootprintBaseMVC.Render(RenderArgs e) at MZpack.NT8.FootprintMVC.Render(RenderArgs e) at MZpack.NT8.mzFootprint.Render(ChartControl chartControl, ChartScale chartScale) at MZpack.NT8.MZpackStrategyBase.yJti4ZrrmyeVNAgwEyK( Object , Object , Object ) at MZpack.NT8.MZpackStrategyBase.OnRender(ChartContro l chartControl, ChartScale chartScale)

        [XmlIgnore()] [Browsable(false)] public Instrument __Instrument => strategy.Instrument;

        public double RoundToTickSize(double price)
        {
            if (__Instrument != null && __Instrument.MasterInstrument != null)
            {
                return __Instrument.MasterInstrument.RoundToTickSize(price);
            }
            else
                return 0;
        }


    public abstract class CoreIndicator :
        IIndicator, IPlatformIndicator 
    {
        protected MZpackStrategyBase strategy; // Master strategy 

[NinjaTrader_Jim]

Hello ren37,

Thanks for your post.

My teammates and I are genuinely invested in making sure that issues that got brought up get thoroughly investigated, and an internal ticket gets formed so our QA and Development teams can address them. This process involves having a simple piece of code to reproduce and demonstrate the issue, steps involved to hit the issue, and some detail describing the cause. Without these details it is incredibly difficult to get hard-to-catch issues resolved.

Now with that said, we are completely willing to work with you further to make sure that the issue is fully understood and we get a proper report filed. I would like to do so, but with the example provided, I do not see where you are encountering an issue. I have used Instrument.MasterInstrument.RoundToTickSize() in OnRender() many times before without encountering any issues at all.

So we can move forward with this issue,

• Can this be reproduced without the inheritance you are using?
• Could you provide a simple export that can demonstrate what you are running into?

Like I mentioned, I have not had issue with RoundToTickSize() in OnRender(). If you are hitting an issue in a certain way, I would like to understand how so we can report it further.

[ren37]

Hi

Do you need a sample? Again? OMG.
I can tell you the only way to fix such kind of bug: stop asking for samples, look inside your 10 lines failed RoundToTickSize() and fix the bug.
Nice that your synthetic tests work well. But I'm afraid I can't explain to you about sporadic bugs in multi-threading apps. But you may google I think...

PS.
Accessing Times[][] still rises sporadic exception. See my QA-3581.

Hello ren37,

Thanks for your post.

My teammates and I are genuinely invested in making sure that issues that got brought up get thoroughly investigated, and an internal ticket gets formed so our QA and Development teams can address them. This process involves having a simple piece of code to reproduce and demonstrate the issue, steps involved to hit the issue, and some detail describing the cause. Without these details it is incredibly difficult to get hard-to-catch issues resolved.

Now with that said, we are completely willing to work with you further to make sure that the issue is fully understood and we get a proper report filed. I would like to do so, but with the example provided, I do not see where you are encountering an issue. I have used Instrument.MasterInstrument.RoundToTickSize() in OnRender() many times before without encountering any issues at all.

So we can move forward with this issue,

• Can this be reproduced without the inheritance you are using?
• Could you provide a simple export that can demonstrate what you are running into?

Like I mentioned, I have not had issue with RoundToTickSize() in OnRender(). If you are hitting an issue in a certain way, I would like to understand how so we can report it further.

[eDanny]

Be nice ren37. It can be very hard to fix a bug if it isn't happening on a test computer. This is why the reproducible sample is required.

[bltdavid]

Is this a product from https://www.mzpack.pro/?
Perhaps the error is happening in MZpack's product?
Have you contacted their support?

[ren37]

Is this a product from https://www.mzpack.pro/?
Perhaps the error is happening in MZpack's product?
Have you contacted their support?

Definitely, you are not a coder...

[NinjaTrader_Jim]

Hello ren37,

I have sent you a message via email. Please send me a reply so we may continue correspondence off the forums and my Lead can work with us as well.

I look forward to being of further assistance.

[ren37]

Hello ren37,

I have sent you a message via email. Please send me a reply so we may continue correspondence off the forums and my Lead can work with us as well.

I look forward to being of further assistance.

Finally, I code my own RoundToTickSize() function. Built-in one doesn't work in 100% cases.