Average of all values between (first above and last above) a threshold value.
Currently I have a VI which I programmed a year or more ago, which grabs any value out of a data set that is above a threshold value. This is used for capturing the average of all values over a threshold when there is one peak of values that go above that threshold. However, when there are two or more peaks that go above this threshold, only the values above that value are averaged, so the end result is the average of two or more averages.
What I need is for every value that occurs after the threshold is reached and before the threshold is dropped below for the last time. Picturing a set of data whose graph looks like the letter "M," for example with the threshold being halfway up the M, I want to show the average of (the first hump, plus the dip below the humps, plus the last hump) but what I'm getting now is the average of (the first hump, plus the last hump). What I get now cuts out the data between the two peaks.
Any assistance would of course be appreciated.
Solved!
Go to Solution.
Attachments:
AveAboveThresholdAll.vi 15 KB
Actually I think that Tims solution has a little difference to the stated problem that both limits should be above a threshold value. Since the second array is inverted the rounding should be not towards +Infinity but towards -Infinity in order to really only go up to the last element that is above the threshold. The code as made by Tim takes one sample more, which could or couldn't have any significance.
Nevermind, I take that back.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions
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