EMA throws error if used AddChartIndicator

[frslvr]

Hello,

I get errors and the strategy closes when I use AddChartIndicator.
This happens unpredictably not on every PC not every time. But if happened it will persist.
Seems like EMA has no access to the data.


It happens outside of the strategy, so I can't even skip it.

[frslvr]

And here is an example of how an EMA added through AddChartIndicator is different from one added manually. Shift and bump. Why is it happening?

[NinjaTrader_Emily]

Hello frslvr,

Thank you for your post.

The error "You are accessing an index with a value that is invalid since itis out-of-range" error may be prevented by adding checks to make sure you have enough bars in the series you are accessing. This is explained on the following help guide page:

https://ninjatrader.com/support/helpGuides/nt8/make_sure_you_have_enough_bars.htm

For example, you could add a condition to check that the CurrentBar is greater than the period for the EMA prior to accessing the EMA values in the script. If you are getting unexpected values, like what you are showing in your second post, I suggest adding print statements to your script to better understand its behavior. You should also consider what settings you have for the indicator added manually and compare that to the indicator added programmatically to double-check if there are any differences between the two.

For more information on using prints to debug your scripts:

https://ninjatrader.com/support/forum/forum/ninjatrader-7/strategy-development-aa/99209-date-conditions-not-working#post791121

Please let us know if we may be of further assistance.

[frslvr]

Hi Emily,

Thank you for your reply.
Please let me repeat myself. It happens inside the @EMA and outside of the strategy. Please see the screenshot of the Call stack.

[NinjaTrader_Emily]

Hello frslvr,

Thank you for your reply.

I was not able to reproduce this behavior with the attached test strategy. I understand you mentioned that, "This happens unpredictably not on every PC not every time. But if happened it will persist." Please test the attached strategy to see if you are able to reproduce the behavior; if there is a particular PC where it is happening and persisting with your strategy that adds the EMA, I am curious if then trying to use the AddEMAStrategyTest strategy would also result in the error. If you are able to reproduce this behavior with the attached test strategy, please send the diagnostic files for that installation of NinjaTrader to our support team for further investigation. You can do this by going to the Control Center-> Help-> Email Support. Ensuring 'Log and Trace Files' is checked will include these files. This is checked by default.

Please feel free to reach out with any additional questions or concerns.