How to set the diagonal of a cell array of matrices?

Asked by Mohammed Kagalwala on 29 Oct 2019

Latest activity Commented on by Mohammed Kagalwala on 29 Oct 2019

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Hi,

I'm looking to set the diagonal of my cell array to identity, specifically eye(3,3). I know a simple for loop solution exists, but if there's something more elegant please let me know.

Thank you.

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Answer by Jos (10584) on 29 Oct 2019

Accepted Answer

Well found, Mohammed! You should put as an answer here :-)

Here is another method

A = cell(4,4) % a cell array
n = size(A,1)
A(1:(n+1):end) = {eye(3,3)}

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Mohammed Kagalwala on 29 Oct 2019

Thanks !

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Answer by Mohammed Kagalwala on 29 Oct 2019

I found the solution ! For a cell array A of size n x n, one can do the following

A(logical(eye(n,n))) = {eye(3,3)};

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Mohammed Kagalwala (view profile)