How can I numerically integrate a Pressure vs. Volume curve?

Right now I am reading data from a pressure sensor and a 1-Dimensional Rotary motion sensor to track the movement of a simple piston. I then send the data to an XY Chart Buffer and also to an array. I would like to find the resulting area enclosed by the loop. Is there a relatively straight forward way of going about this?
Thanks!
Andrew

Give this a try...
Mike...
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Attachments:
Integrate_PV.vi ‏21 KB

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