Error Onbarupdate from volumetric modification

[tonynt]

Hello,

after modifying script strategy I have an error message

18.02.2021 12:30:53	Default	Strategy 'Tx102xBAxESv11': Error on calling 'OnBarUpdate' method on bar 5473: Index was outside the bounds of the array."

and I cant find anything that might cause this. So I want to ask if this syntax here is not correct maybe with "BarsSeries" when adding more than one volumetric dataseries.


NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe barsType = BarsArray[0].BarsSeries.BarsType as NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe;
if (barsType == null) return;

NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe barsType2 = BarsArray[1].BarsSeries.BarsType as NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe;
if (barsType2 == null) return;

Thank you!
Tony

[NinjaTrader_ChrisL]

Hello Tony, thanks for your post.

You must call AddVolumetric to add a secondary volumetric series:

https://ninjatrader.com/support/help...volumetric.htm

I discussed how to access the secondary series volumetric data here (your barsType2 = BarsArray[1] code is already correct and should work):

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/106297-can-volumetric-bars-be-added-as-a-second-data-series?p=823328#post823328

Please let me know if this does not resolve your inquiry.

[tonynt]

Hello,

yes, or course I must call addvolumetric to add ....

I tried to translate my thoughts and ask my question accurately. Can you please refer to my question.

NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe barsType = BarsArray[0].BarsSeries.BarsType as NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe;
if (barsType == null) return;

OR

NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe barsType = BarsArray[0].BarsType as NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe;
if (barsType == null) return;

Thank you!
Tony

[NinjaTrader_ChrisL]

Hello tonynt, thanks for your reply.

The proper way to cast the type is:

NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe barsType2 = BarsArray[2].BarsType as NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe;

My test script works properly for this. Could you refer to this one to see what is different between my script and yours?

Best regards,
-ChrisL

[tonynt]

Hello,

I try again with different question: when with "BarsSeries"
NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe barsType = BarsArray[0].BarsSeries.BarsType as NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe;
if (barsType == null) return;
AND WHEN without "BarsSeries"
injaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe barsType2 = BarsArray[1].BarsType as NinjaTrader.NinjaScript.BarsTypes.VolumetricBarsTy pe;
if (barsType == null) return;

Has this to do if primary dataseries or an added dataseries?

Thank you!
Tony

[NinjaTrader_ChrisL]

Hello tonynt, thanks for your reply.

If you are asking why using BarsArray[0].BarsSeries.BarsType does not work vs using BarsArray[1].BarsType, its because BarsArray[0].BarsSeries is the Bars object of the primary data series. Any time you need to access multiple Bars objects in a multi time frame/instrument script use the BarsArray collection.

Please let me know if I can assist any further.

[tonynt]

Hello,

no I do not ask why {0] does not work with [1].

I asked several times in your language when to have the string "BarsSeries" in the syntax and when not.

Thank you!
Tony