| | | Scilab Reference Manual | |
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speye — sparse identity matrix
Isp=speye(nrows,ncols) Isp=speye(A)
| nrows | : integer (number of rows) |
| ncols | : integer (number os columns) |
| A | : sparse matrix |
| sp | : 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).
eye(3,3)-full(speye(3,3))
| << spcompack | spget >> |