
1. Re: How to define the area under a curve
Jim Dehner Oct 2, 2018 5:14 AM (in response to Ian Wynne)Hi Ian
Interesting  the way to calculate the area under the curve is to take the interval on the time axis times the average of the readings at the start of the interval and the end  Just think like a bar an you are taking the bas (interval) x height
in your case the interval on the time access is actually in seconds
so the value of the interval is
and the area of each "bar" is
and the total area is
in text chart form the Tuesday looks like this
and wednesday looks like this
the dimensions on the area in seconds X your test reading  you can convert to minutes by dividing by 60
because the interval on the time line is seconds and there is a reading every second (well almost  there is some time rounding going on here) the numerical solution is equivalent to taking the window sum of the average readings but that would not be the case of you change the interval to say every 5 seconds
Jim
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2. Re: How to define the area under a curve
Gheorghie Lang Oct 2, 2018 5:20 AM (in response to Ian Wynne)Hi Ian
You just need a simple LoD of {EXCLUDE [TIME] : SUM(CVT)}
You can check by highlighting all points and checking if the number displayed at the bottom is the same as the number in the view. They will be different as you've applied a moving average, but the difference is quite small.
Kind Regards
Gheorghie