spones

Replaces non zero sparse matrix elements with ones.

Syntax

  • s = spones(S)

Input argument

  • S - Sparse or 2D matrix.

Output argument

  • S - a sparse matrix.

Description

s = spones(S) returns a matrix s with the same sparsity structure as S, but with one's in the nonzero positions.

Example

S = sparse([1,0;3,4]);
R = spones(S)

See also

speye, sparse.

History

Author

Allan CORNET

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