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.

sprank

Structural rank

Syntax

r = sprank(A)

Description

r = sprank(A) is the structural rank of the sparse matrix A. For all values of A,

sprank(A) >= rank(full(A))

In exact arithmetic, sprank(A) == rank(full(sprandn(A))) with a probability of one.

Examples

A = [1    0    2    0
     2    0    4    0 ];

A = sparse(A);

sprank(A)

ans =
     2

rank(full(A))

ans =
     1

See Also

Introduced before R2006a

Was this topic helpful?