# need help with loop

1 view (last 30 days)
Yash Raj Haldaniya on 24 Apr 2022
hello guys, i'm very new to matlab and currently facing some problems in loop coding.
so firstly i want to make a loop of a matrix i don't how much its size will be.
so i've an equation for a node like phi(i, j)= {some constant}*{(phi(i-1, j-1)-2*phi(i, j-1)+phi(i+1, j-1)} Where i is an number that shows my node location in X-Y plane and j shows my node location in Z plane. its kind of taylor series problem i think.
i want this loop to run till i get phi(i, j)= phi(i, j-1) and store all the values in a matrix.(for storing i and j can also work as raw and column)
hopefully you guys can give me some tips.
Thank You
Sam Chak on 24 Apr 2022
@Yash Raj Haldaniya, Can give an example using a simple matrix like the following?
M = [2 1; 4 3]
M =
3 1
4 2
Yash Raj Haldaniya on 24 Apr 2022
i'm attaching what i've done so far so you can get an idea. please dont mind the messy code im very new in this.

Bharat Chandra Mukkavalli on 11 Jul 2022
Hi,
I went through the code but unfortunately I couldn't understand what you are trying to do.
Please explain in detail what it is you are trying to achieve.
I have changed the loop to a nested loop and modified the if condition (from "==" to "isequal()"), since the original code was throwing errors.
Please find the attached updated code file.