MATLAB Function Reference

sprand - Sparse uniformly distributed random matrix

Syntax

R = sprand(S)
R = sprand(m,n,density)
R = sprand(m,n,density,rc)

Description

R = sprand(S) has the same sparsity structure as S, but uniformly distributed random entries.

R = sprand(m,n,density) is a random, m-by-n, sparse matrix with approximately density*m*n uniformly distributed nonzero entries (0 <= density <= 1).

R = sprand(m,n,density,rc) also has reciprocal condition number approximately equal to rc. R is constructed from a sum of matrices of rank one.

If rc is a vector of length lr, where lr <= min(m,n), then R has rc as its first lr singular values, all others are zero. In this case, R is generated by random plane rotations applied to a diagonal matrix with the given singular values. It has a great deal of topological and algebraic structure.

sprand uses the internal state information set with the rand function.

See Also

sprandn, sprandsym

spparms

sprandn