## 1. Extract only diagonal elements from matrix - MATLAB Answers

26 jan 2021 · I have a matrix in one variable and a list of coordinates in another variable. Is there a way to extract only the matching pairs of coordinate from the matrix?

I have a matrix in one variable and a list of coordinates in another variable. Is there a way to extract only the matching pairs of coordinate from the matrix? I.e. X(1),Y(1); X(2), Y(2)... I ca...

## 2. Create diagonal matrix or get diagonal elements of matrix - MATLAB diag

Description · Examples · Input Arguments

This MATLAB function returns a square diagonal matrix with the elements of vector v on the main diagonal.

## 3. How to extract the diagonal of a given matrix? - MATLAB Answers

7 sep 2017 · How can I extract the diagonal of a given matrix with using size? I know we can do it directly with diag.

How can I extract the diagonal of a given matrix with using size? I know we can do it directly with diag.

## 4. MATLAB diag - MathWorks

D = diag( v , k ) places vector v on the k th diagonal. k = 0 represents the main diagonal, k > 0 is above the main diagonal, and k < 0 is below the main ...

This MATLAB function returns a square diagonal matrix with vector v as the main diagonal.

## 5. How can I get the secondary diagonal of a matrix? - MATLAB Answers

27 okt 2020 · I want to take the elements A(1,5), A(2,4), A(3,3), A(4,2), A(5,1), (secondary diagonal), and put those ones into a vector without picking ...

for exaple: A=rand(5,5) diag(A)= main diagonal of matrix A I want to take the elements A(1,5), A(2,4), A(3,3), A(4,2), A(5,1), (secondary diagonal), and put those ones into a vector without pick...

## 6. diagonals of an uncertain matrix - MATLAB diag - MathWorks

MV = diag( V , K ) places the elements of V on the K th diagonal of the matrix MV . K > 0 is above the main diagonal and K < 0 is below the main diagonal.

This MATLAB function creates an uncertain matrix MV whose diagonal elements are the elements of the uncertain vector V and whose off-diagonal elements are 0.

## 7. How to Make a Matrix Diagonal with Matlab? - MathWorks

10 apr 2018 · I am working on a quantum mechanics problem and would like to get a 4x4 matrix A into diagonal form such that A=UDU^{-1}.

I am working on a quantum mechanics problem and would like to get a 4x4 matrix A into diagonal form such that A=UDU^{-1}. Basically I just need to know the values of D and U required in the expres...

## 8. Determine if matrix is diagonal - MATLAB isdiag - MathWorks Benelux

A matrix is diagonal if all elements above and below the main diagonal are zero. Any number of the elements on the main diagonal can also be zero. For example, ...

This MATLAB function returns logical 1 (true) if A is a diagonal matrix.

## 9. How to extract a number of diagonals of a matrix - MATLAB Answers

6 jun 2014 · Direct link to this answer · - Here is a version using sparse matrices and SPDIAGS · Original, dense matrix: · Define diag ID "amplitude":.

Hello all, I have an N-by-N matrix. I want to extract the main diagonal and d diagonals to its right and d diagonals to its left and null all other elements. How can I do that? Thanks

## 10. How to extract diagonal elements of multidimensional array - MathWorks

23 mrt 2023 · How to extract diagonal elements of... Learn more about multidimensional array, diagonal elements.

If I have a m-order n-dimensional tensor. How should I extract the diagonal elements ? For example % Generate a 3-order 4-dimensional tensor rng('default') A = rand(4,4,4) The diagonal elem...

## 11. Is there an easier way to index diagonal elements of a matrix?

27 jul 2022 · A = diag(randi(100,10,1));. I want to replace some of the diagonals with different values. In particular, I want to replace the 3rd, 6th, 7th, ...

Let's say I have a 10 x 10 diagonal matrix of random integers between 0 and 100: A = diag(randi(100,10,1)); I want to replace some of the diagonals with different values. In particular, I want to...

## 12. How to get diagonal elements of non-square matrix? - MATLAB Central

26 mrt 2017 · Direct link to this answer ... What you want effectively is the values on the line going from one corner to the other. ... m = rand(20, 10); %demo ...

Hi, guys! I am working with rectangular matrixes and I want to extract the values that go from the upper left corner to lower right (diagonal). I have tried to write some codes, but they don't g...

## 13. Extract main diagonal of input matrix - Simulink - MathWorks

The Extract Diagonal block populates the unoriented output vector with the elements on the main diagonal of the M-by-N input matrix A.

## 14. How to Extract Diagonal Elements of a Matrix in MATLAB? - Linux Hint

The diagonal entries of the given matrix A can be extracted using the diag() function. The diag() is a built-in function in MATLAB that allows us to create ...

In MATLAB the diag() function is used to extract diagonal elements of a matrix. Find details and examples in this tutorial.

## 15. MATLAB spdiags - MathWorks China

This MATLAB function extracts the nonzero diagonals from m-by-n matrix A and ... Extract nonzero diagonals and create sparse band and diagonal matrices.

This MATLAB function extracts the nonzero diagonals from m-by-n matrix A and returns them as the columns in min(m,n)-by-p matrix Bout, where p is the number of nonzero diagonals.

## 16. trace - Sum of diagonal elements - MATLAB - MathWorks

tr ( A ) = ∑ i = 1 n a i i = a 11 + a 22 + ... + a n n .

This MATLAB function calculates the sum of the diagonal elements of matrix A:...