How would I make a script to find the Diagonal of a matrix?

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Alicia Gillies
Alicia Gillies 2018-2-11
回答： Walter Roberson 2018-2-11
I know you could simply use the Diag function but I am playing around with making scripts and I am curious.

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回答（2 个）

Star Strider
Star Strider 2018-2-11
编辑：Star Strider 2018-2-11
Hi, Curious Alicia Gillies!
I would do this:
M = ...; % Your Matrix
for k = 1:min(size(M))
diagM(k) = M(k,k);
end
and to create a diagonal matrix from the same ‘diagM’ (or any other) vector:
N = eye(numel(diagM)) .* diagM(:);
Walter Roberson
Walter Roberson 2018-2-11
diagM = @(M) M(1:size(M,1)+1:size(M,1)*min(size(M))).';

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