Numerical Integration of Data Set

Numerical Integration of Data Set - Numerical Integration of Data Set - Messaggi

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#1 Pubblicato: 22/03/2017 05:22:47

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Is there an easy way to integrate a data set using the trapezoid rule, like the "trapz" function in matlab?
Also is there an easy way to find the centroid of this area?

I've attached a sample data set.

integration array.sm (3,05 KiB) scaricato 1261 volta(e).

#2 Pubblicato: 22/03/2017 07:55:36

Davide Carpi

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geometric solution

integration array.sm (11,73 KiB) scaricato 1401 volta(e).

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Ernesto 23/03/2017 21:18:00

#3 Pubblicato: 22/03/2017 13:14:35

Ernesto

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That's perfect!!

Thanks for your help!

#4 Pubblicato: 22/03/2017 13:18:39

Вячеслав Мезенцев

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or I can add original "trapz" function to the matlab plugin if you really need this.

Russia ☭ forever, Viacheslav N. Mezentsev

#5 Pubblicato: 22/03/2017 13:22:56

Ernesto

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Thanks but this is more than sufficient for my needs.

Regards.

#6 Pubblicato: 22/03/2017 15:12:56

Jean Giraud

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Ernesto,

Your data set is not impressive. As is: it represents no physical phenomenon.
The way I see it is otherwise ... it looks the linear junctions can only
represent derivatives of quadratic. It suggests a polynomial fit [offered].
Is it a piece of wood ? the fence around the yard ?

Jean

integration array [option].sm (22,17 KiB) scaricato 1077 volta(e).

#7 Pubblicato: 22/03/2017 15:29:50

Ernesto

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@Jean

It is horizontal soil pressure vs depth

#8 Pubblicato: 23/03/2017 10:29:54

Jean Giraud

983 apprezzamenti in 6.866 post.

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Wrote
@Jean

It is horizontal soil pressure vs depth

Thanks Ernesto, interesting.

You can complete and export your project,
in red at the end of the WS.

Jean

Polynomial fit QUARTIC Option.sm (26,24 KiB) scaricato 1267 volta(e).

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Numerical Integration of Data Set - Numerical Integration of Data Set - Messaggi