How to add elements to an array for 60 seconds and then call the last 60 seconds to compare as time increases

[wwjacobd]

I know the subject is a word soup but I'll try and clarify here.

In 60 second increments, for an experiment total time of 1 hour,  I am trying to add a 1 or 0 to an array(comes from experiment input and not relevant) each second.

I want to compare the sum of 1's to a user determined fail threshold(this part is covered, its just for clarity of what I'm trying to accomplish).

After the first 60 seconds, I want to compare the sum to the last 60 seconds...for example at t = 63s,  I want call the sum of values from elements  2-62 to compare with the fail condition threshold.  So basically, how do I create a sum that moves with time equal to the previous 60 seconds.

I have tried to next a for loop inside of a while loop, but it seems to refill the array with new values instead of appending it, and I cannot for the life of me find a way to call a range of elements in an array.  Would greatly appreciate any ideas on how to achieve this!

[GerdW · Accepted solution]

Hi Jacob,

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@wwjacobd wrote:

After the first 60 seconds, I want to compare the sum to the last 60 seconds...for example at t = 63s,  I want call the sum of values from elements  2-62 to compare with the fail condition threshold.  So basically, how do I create a sum that moves with time equal to the previous 60 seconds.

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This is called "running sum": you can easily create this using a Pt-By-Pt-DataQueue function, set to hold 60 samples…

[wwjacobd]

This exactly what I was trying to accomplish.  Thank you!

[davy.k]

This can be achieved manually with a circular buffer, something like so.