How to calculate area under peak?

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Namira
Namira on 2 Jun 2017
Answered: KSSV on 2 Jun 2017
I want to calculate the area under peak? Is Matlab have any default function to do it? Anyone can help? thanks.
  2 Comments
Benjamin Kraus
Benjamin Kraus on 2 Jun 2017
You are going to need to provide more details so that someone can help you.
For instance:
  • How do you define "peak"? Do you want the largest value? Or the entire curve?
  • You are asking about the area, so you need to specify the x-range you want to measure. How wide is the "peak"?
  • You haven't indicated how you are specifying the x- and y-values. Are the x-values evenly spaced? Are they spaced at unit intervals? If not, what is the spacing?
If you want to know the area under the entire curve, just sum the values and divide by the x-limits (assuming x-values are uniformly spaced).

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