issparse

Determines if an input is a matrix with sparse storage.

Syntax

b = issparse(a)

Inputs

a: Typically, a matrix input.; Type: double | complex|; Dimension: matrix

Outputs

b: The logical output, returning 1 for a sparse matrix.; Type: logical; Dimension: scalar

Example

m = [10,   0, 110,   0,  210, 260;
     20,   0,   0, 170, -220,   0;
      0,   0,   0, 180,  230,   0;
     40, -90,   0, 190,  240, 290;
      0,   0, 150,   0,    0,   0];
s = sparse(m);
b = issparse(m)

b = 0
c = issparse(s)
c = 1