R = sprandn(S)
R = sprandn(m,n,density)
R = sprandn(m,n,density,rc)
R = sprandn(S)
has the same sparsity structure as S
, but normally distributed random entries with mean 0 and variance 1.
R = sprandn(m,n,density)
is a random, m
-by-n
, sparse matrix with approximately density
*m
*n
normally distributed nonzero entries (0 <= density <= 1)
.
R = sprandn(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.
sprandsym
(c) Copyright 1994 by The MathWorks, Inc.