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
Problem Comments
1 Comment
Solution Comments
Show comments
Loading...
Problem Recent Solvers44
Suggested Problems
-
4577 Solvers
-
Sum all integers from 1 to 2^n
18116 Solvers
-
290 Solvers
-
Calculate the area of a triangle between three points
3574 Solvers
-
Divide elements by sum of elements
145 Solvers
More from this Author43
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
% this problem is not guaranteed solvable
isequal(spdiags([eye(5) zeros(5)]),spdiags(eye(5)))