Need to run condition from X bars ago to current bar

[Kuvala]

Hi, I need help in how to code the logic to loop thru and check a condition from 'X' bars ago (this can be variable) to the most recent bar. That is based on the OHLC value of an 'X' bar ago, I need to check the condition on every future bar until the last current bar. (as per image below). Any help would be appreciated. Thanks.

[NinjaTrader_Jesse]

Hello Kuvala,

There is a NinjaScript method which can be used for checking a condition over a period of bars, that is called CountIF: https://ninjatrader.com/support/help...ghtsub=countif

You can also use a C# for loop for that purpose.

[Kuvala]

Thank you. But how to identify the bar number from where I start checking my condition and I need to check the condition in each future bar until the current bar..need help in identifying the start bar number and current bar number so that I can write a loop logic. When I print current bar number at each candle I get incremental value from left most bar in chart..so not sure how to come up with the loop logic. Please refer to the diagram I attached of what I am looking for.

[NinjaTrader_Jesse]

Hello Kuvala,

If you want to use a loop I would suggest looking at external C# tutorials on how to use loops in C#. NinjaScript is C# language.

To find the bar number in a loop would require that you subtract the iterator in the loop from the CurrentBar. That would give you a BarsAgo. For example if you started a loop with its iterator as CurrentBar and subtract 1 for each loop iteration you would get a number less than CurrentBar for each loop. When you subtract that number from the current bar it would give you a BarsAgo which you can use with any of the price or time series.


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[Kuvala]

Is there any sample code to identify BarAgo ?

[NinjaTrader_Jesse]

Hello Kuvala,

I am not aware of any samples using a for loop in NinjaScript. for loops are a general C# concept which you can learn about in external C# learning resources. I would suggest to search online for "C# for loop example" to get some samples of using loops.

To get a BarsAgo from the CurrentBar you would use math and subtract the iterator for currentbar:

int barsAgo = CurrentBar - i;

When working with loops there is a good chance you will hit an indexing error if the loop is not properly formed, I would also suggest using Prints with the loop to observe how your code is working as part of the debugging process. https://ninjatrader.com/support/help...lightsub=print

[kenz987]

Bars.GetBar(DateTimetime)

[Kuvala]

Thanks for the suggestions.