Integration of numerical data

I have a set of numerical data stored in a vector D, and a second vector of positions z, of equal length.
If i wish to calculate the integral shown in the picture, how would this be done?
Equation.png

Respuestas (2)

John D'Errico
John D'Errico el 27 de Mayo de 2019

0 votos

Multiply the two vectors. Then call trapz.
Star Strider
Star Strider el 27 de Mayo de 2019

0 votos

For vectors of data, the best option would be the trapz (link) or the related cumtrapz functions, depending on the result you want.

1 comentario

Abdul Basith Ashraf
Abdul Basith Ashraf el 31 de Ag. de 2020
I have not so regular data (x and y are returned from ode45).
How can I visualize the rectangles under the curve to see how good trapz is doing?

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el 26 de Mayo de 2019

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el 31 de Ag. de 2020

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