?? nnz.m
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function nz = nnz(S)
%NNZ Number of nonzero matrix elements.
% nz = NNZ(S) is the number of nonzero elements in S.
%
% The density of a sparse matrix S is nnz(S)/prod(size(S)).
%
% See also NONZEROS, NZMAX, SIZE.
% Copyright 1984-2004 The MathWorks, Inc.
% $Revision: 5.9.4.1 $ $Date: 2004/03/02 21:48:24 $
nz = sparsfun('nnz',S);
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