dealing with the offset - cumtrapz

7 visualizzazioni (ultimi 30 giorni)
Bran
Bran il 23 Gen 2015
Risposto: Christian R. il 20 Feb 2019
I am using cumtrapz which requires an equally spaced dataset in order to carry out integration. I pick the value closet to zero in order to begin my integration however I was wondering how do I correct for the slight offset so that my integration avoids accumulating error. I tried interpolation but it didnt fit with cumtrapz very neatly.

Accedi per rispondere a questa domanda.

Risposte (2)

Matt J
Matt J il 23 Gen 2015
I am using cumtrapz which requires an equally spaced dataset in order to carry out integration.
Not sure what you mean by that. CUMTRAPZ supports the syntax
Z = cumtrapz(X,Y)
which allows you to specify non-uniformly spaced X.
Christian R.
Christian R. il 20 Feb 2019
In an integration if the steps are close enough the error will decrease, then, you must decrease the step of the vector the smaller the better but the slower it runs because of more points to compute. (try 1e-4 it might work).

Categorie

Scopri di più su Numerical Integration and Differentiation in Help Center e File Exchange

Tag

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by