Vectorized Diagonal of any Multi-Dimensional Matrix

Versione 1.0.0.0 (3,23 KB) da Darin Koblick
Given an N-D matrix, this routine will return the diagonal elements of any two dimensions
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Aggiornato 17 gen 2015

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Suppose you have a matrix which was generated by the following MATLAB command:
>> ND = repmat(diag(1:3),[1 1 2 2 1 2]);
The size of this matrix is found to be: [3 3 2 2 1 2]

This routine can return the diagonal terms of this matrix simply by specifying the row dimension and the column dimension of the 2-D plane of interest:
>> dND = diagND(ND,1,2);

The resulting Matrix, dND, has the following size [1 3 2 2 1 2] and the expected solution of:
[1 2 3] across dimensions 3 through 6.

Cita come

Darin Koblick (2024). Vectorized Diagonal of any Multi-Dimensional Matrix (https://www.mathworks.com/matlabcentral/fileexchange/49067-vectorized-diagonal-of-any-multi-dimensional-matrix), MATLAB Central File Exchange. Recuperato .

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1.0.0.0