Documentation

This is machine translation

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

Note: This page has been translated by MathWorks. Please click here
To view all translated materals including this page, select Japan from the country navigator on the bottom of this 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?