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
-
Program an exclusive OR operation with logical operators
803 Solvers
-
Construct an index vector from two input vectors in vectorized fashion
462 Solvers
-
Generate N equally spaced intervals between -L and L
958 Solvers
-
Relative ratio of "1" in binary number
1682 Solvers
-
1562 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)))