MATLAB Answers


5 point differentation in Matlab

Asked by Usman
on 4 Sep 2012


Can anyone please guide me as to how to perform 5 point differentiation n Matlab, what does 5 point differentiation mean?



Matt Fig
on 5 Sep 2012

Nobody meant to taunt you, Usman. The link I pasted above has the exact formula for 1-D and also explains what h is:

"In one dimension, if the spacing between points in the grid is h, then the five-point stencil of a point x in the grid is..."

So you just need to pick a small value for h (the distance between each of the 5 points on the curve). Once you start writing code, post it and I am certain you will get more help.

Jan Simon
on 5 Sep 2012

@Usman: You asked for a term, Matt Fig showed you how to find its definition and the short period of time means a friendly suggestion to ask Google by your own the next time. If you even want a Matlab implementation, you can ask Google again for "Matlab 5 point differentation". If you are still not satisfied, ask a specific question.

Matt Tearle
on 5 Sep 2012

There's a tutorial that might help here...

Usman, note the tags that have been added... See what the tutorial says about those...

You asked what 5-pt differentiation means, and Matt showed that a quick search will provide the answer. As to implementing it in MATLAB, maybe you should provide a starting point so that we can help you. Otherwise, it looks a bit like you expect random volunteers on the internet to do your work/homework for you.


No products are associated with this question.

2 Answers

Answer by Star Strider
on 5 Sep 2012
 Accepted answer

Here are a couple links that explain it about as clearly as possible:

Numerical differentiation formulas (Gives an example using a 4-point first derivative)


Numerical differentiation

Note that if f(x) is the function you are differentiating (here the numerical data you have), h is the step size, that is:

h = x(k + 1) - x(k);

I have experimented with the algorithm for the 5-point first derivative. It is easy to implement, accurate, and reasonably precise.

  1 Comment

on 6 Sep 2012

Thanks Bro

Answer by Usman
on 5 Sep 2012

Thanks alot friends. but i certainly did google the term matlab implementation of 5 point difference and go no satisfactory result. that is why i came over here to help. if you think i want free volunteers to do my work for me, its better you dont reply back to the answer instead of passing senseless comments


Discover MakerZone

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi test

Learn more

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply Today

MATLAB Academy

New to MATLAB?

Learn MATLAB today!