Problem 2585. How to reverse spdiags?

The spdiags function extracts all nonzero diagonals from the m-by-n matrix A.
So if
A = [1 2 3;4 5 6;7 8 9]
then
spdiags(A) = [7 4 1 0 0;
0 8 5 2 0;
0 0 9 6 3]
But if I give you spdiags(A), can you give me A ?

Solution Stats

18.81% Correct | 81.19% Incorrect
Last Solution submitted on Mar 18, 2024

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers36

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!