Test a matrix to see if it is sparse or not. The general format for its use is
y = issparse(x)
This function returns true if x
is encoded as a sparse
matrix, and false otherwise.
Here is an example of using issparse
:
--> a = [1,0,0,5;0,3,2,0] a = <int32> - size: [2 4] Columns 1 to 4 1 0 0 5 0 3 2 0 --> issparse(a) ans = <logical> - size: [1 1] 0 --> A = sparse(a) A = <int32> - size: [2 4] Matrix is sparse with 4 nonzeros --> issparse(A) ans = <logical> - size: [1 1] 1