MATLAB Answers

dividing a diagonal matrix into same and different diagonal elements

6 views (last 30 days)
Sadiq Akbar
Sadiq Akbar on 16 May 2021
Commented: Dyuman Joshi on 17 May 2021
I have a diagonal matrix as:
V = [ 0.0001 0 0 0 0;
0 0.0001 0 0 0;
0 0 3.6388 0 0;
0 0 0 5.3610 0;
0 0 0 0 6.0004];
I want to find the number of diagonal elements which are same in values. 2ndly I want to separate them in a variable, how will I do it? Here V is a 5x5 matrix, but it may be any square size matrix in general.

Answers (1)

Dyuman Joshi
Dyuman Joshi on 16 May 2021
Edited: Dyuman Joshi on 16 May 2021
%This will give the diagonal elements in a separate variable.
z = diag(V);
%Finding the number of repeated values
y = unique(z);
n = histc(z,y);
x = n(n>1); %If there are more than 1 repeating values, answer will be an array
a = y(n>1); %Get the variables that are repeated
  3 Comments
Dyuman Joshi
Dyuman Joshi on 17 May 2021
Is it necessary to use functions? Your code is not the optimised way to write functions.

Sign in to comment.

Community Treasure Hunt

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

Start Hunting!

Translated by