Documentation

This is machine translation

Translated by Microsoft
Mouse over text to see original. Click the button below to return to the English verison of the page.

sprandn

Sparse normally distributed random matrix

Syntax

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

Description

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.

More About

collapse all

Tips

  • sprandn uses the same random number generator as rand, randi, and randn. You control this generator with rng.

See Also

|

Introduced before R2006a

Was this topic helpful?