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],
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 ?
% this problem is not guaranteed solvable
Eight Queens Solution Checker
Are all the three given point in the same line?
Unique values without using UNIQUE function
Maximum value in a matrix
Expression or variable?
Numbers spiral diagonals (Part 1)
Find my secret number
Rank of magic square (for beginners)
Clear all empty variables from the workspace
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office