speye — sparse identity matrix
Isp=speye(nrows,ncols) Isp=speye(A)
integer (number of rows)
integer (number os columns)
sparse matrix
sparse identity matrix
Isp=speye(nrows,ncols) returns a sparse identity
matrix Isp with nrows rows,
ncols columns. (Non square identity matrix have a
maximal number of ones along the main diagonal).
Isp=speye(A) returns a sparse identity matrix
with same dimensions as A. If
[m,n]=size(A), speye(m,n) and
speye(A) are equivalent. In particular
speye(3) is not equivalent to
speye(3,3).