spones

Replace nonzero sparse matrix elements with ones

Syntax

R = spones(S)

R = spones(S) generates a matrix R with the same sparsity structure as S, but with 1's in the nonzero positions.

c = sum(spones(S)) is the number of nonzeros in each column.

r = sum(spones(S'))' is the number of nonzeros in each row.

sum(c) and sum(r) are equal, and are equal to nnz(S).

This function fully supports GPU arrays. For more information, see Run MATLAB Functions on a GPU (Parallel Computing Toolbox).

This function fully supports distributed arrays. For more information, see Run MATLAB Functions with Distributed Arrays (Parallel Computing Toolbox).