spones
Set non-zero matrix elements to 1.
Syntax
s = spones(m)
s = spones(m, n)
s = spones(dim)
Inputs
- m
- A sparse or full matrix.
Outputs
- s
- A sparse matrix with the non-zero input elements replaced by 1.
Example
a(1, 1) = 1; a(1, 2) = 6; a(1, 3) = 0; a(1, 4) = 16;
a(2, 1) = 2; a(2, 2) = 0; a(2, 3) = 0; a(2, 4) = 0;
a(3, 1) = 0; a(3, 2) = 7; a(3, 3) = 13; a(3, 4) = 18;
a(4, 1) = 4; a(4, 2) = 0; a(4, 3) = 14; a(4, 4) = 0;
s = spones(sparse(a))s = sparse [4 x 4], nnz = 9
[1,1] 1
[2,1] 1
[4,1] 1
[1,2] 1
[3,2] 1
[3,3] 1
[4,3] 1
[1,4] 1
[3,4] 1