spones - Replace nonzero sparse matrix elements with ones
Syntax
R = spones(S)
Description
R = spones(S) generates a matrix R with
the same sparsity structure as S, but with 1's
in the nonzero positions.
Examples
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).
See Also
nnz, spalloc, spfun
 | spline | | spparms |  |
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