Rolling counter for pattern

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Hello-

I want to code a indicator that counts x number of occurrences of a given pattern. I don't want this to be based on num bars but by the last X number of patterns, with pattern #X rolling off upon the trigger of a new pattern.

For example:

I want to count the last 15 instances where (c crosses over Bollinger Band Upper (+1)OR c crosses under Bollinger Band Lower (-1)) and where number of bars back is not a criteria. My goal is to sum the instances.

How do I code this rolling counter?

Thank you,

masber2000

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Create indicator that has your +1,0,-1 value. Create an array of length 15. Track which element of the array you need to update next. When indicator != 0 update array. Sum of the array is the answer you want.
Create indicator that has your +1,0,-1 value. Write a loop that looks backwards until it finds 15 indicator values != 0. Keep a running total as this is the answer you want.

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I'll try these suggestions. Thank you for your help SMCJB!

Rolling counter for pattern

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Rolling counter for pattern

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