Select BarType from menu

[Impeesa]

Hello

I would like selecting between Range and Renko bars types in a secondary serie in my strategy.

I have created a enum variable but it does not works, error compiling CS0117



public enum TypeOfBar
{
Range,
Renko
}

----------------------------------------------

[NinjaScriptProperty]
[Display(Name = "Type of Bar", GroupName = "Parameters", Order = 1)]
public TypeOfBar MyTypeOfBar { get; set; }

-----------------------------------------------

AddDataSeries(Data.BarsPeriodType.MyTypeOfBar, Bar_Size);

-----------------------------------------------

What would be a better approach to this issue?

Thanks

[NinjaTrader_Kate]

Hello Impeesa,

Thank you for your reply.

It's not supported to load a data series in a dynamic manner based on user input. From our help guide:

Arguments supplied to AddDataSeries() should be hardcoded and NOT dependent on run-time variables which cannot be reliably obtained during State.Configure (e.g., Instrument, Bars, or user input). Attempting to add a data series dynamically is NOT guaranteed and therefore should be avoided. Trying to load bars dynamically may result in an error similar to: Unable to load bars series. Your NinjaScript may be trying to use an additional data series dynamically in an unsupported manner.

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

What I would recommend is instead to add both the data series, and use the chosen enum value to determine which series to use for your calculations.

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

[Impeesa]

Hello, Kate

I will take your advise.

And what about a menu to select another instrument? I expect the best way is not with a enum value but an empty text field.

Can you please tell me how can I do that? Have you got any example?

Thanks in advanced

[NinjaTrader_Kate]

Hello Impeesa,

Thank you for your reply.

That would fall under dynamically loading the data series and may run into the same issues as above. However, you could look at the Spread indicator on the publicly available User App Share - this indicator allows you to specify a secondary data series for calculating a spread via a user input that is then used in the call to AddDataSeries:

https://ninjatraderecosystem.com/user-app-share-download/spread-2/

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

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