Problem 42635. Maximum of each diagonal

The well-known max function can operate along either the rows or the columns of a matrix by using

[Y,I] = max(X,[],1) or [Y,I] = max(X,[],2)

but it cannot operate along a diagonal dimension. For this problem, create a function that returns the largest component along each diagonal of a matrix (starting with the one-element diagonal in the bottom left corner of the matrix).

Example

If

X = magic(3) = [8 1 6
                3 5 7
                4 9 2]

then

Y = maxdiag(X) = [4 9 8 7 6]

See also mindiag.

Solve

Solution Stats

33.73% Correct | 66.27% Incorrect
Last Solution submitted on Dec 10, 2025

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers66

Suggested Problems

More from this Author43

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!