Calculating area under a curve

Hi all!

I would like to know how to calculate the area under a curve which does not given an equation. I am really gratefyl if some scholar provide me an answer.

Kind regards,

A.Wickramasinghe

Answer 1

[Image Analyst]

Depends on what the signal values truly represent. I'd suggest either summing the signal with sum() or using trapz(). You can make a case for either being a good computation of the area under the curve depending on what the signal means physically.

[Amila Wickramasinghe]

Thank you very much.