Scilab Function
Last update : 28/12/2008

speye - sparse identity matrix

Calling Sequence

Isp=speye(nrows,ncols)
Isp=speye(A)

Parameters

Description

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).

Examples


eye(3,3)-full(speye(3,3))
 
  

See Also

sparse,  full,  eye,  spzeros,  spones,