Hi, what is the Julia-way of obtaining off-diagonal elements of a matrix flattend as a vector, e.g. A = [1 2; 3 4] offdiag(A) = [2, 3] I stumbled across diagind but could not figure out how to do it neatly. Best, jamblejoe EDIT: Better example: A = [1 2 3; 4 5 6; 7 8 9] offdia(A) = [2, 3, 4, …

Or using the generalized indexing accessors, function offdiag2(A::AbstractMatrix) [A[ι] for ι in CartesianIndices(A) if ι[1] ≠ ι[2]] end which should work for indexes other than 1-based.

Off diagonal elements of Matrix

General Usage

jamblejoe June 10, 2020, 11:09pm 3

I do not care right now. I am just interested in the 2D case!

EDIT: Sorry, I should have mentioned that!

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Off diagonal elements of Matrix

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