condeig

Condition number with respect to eigenvalues

Syntax

c = condeig(A)
[V,D,s] = condeig(A)


Description

c = condeig(A) returns a vector of condition numbers for the eigenvalues of A. These condition numbers are the reciprocals of the cosines of the angles between the left and right eigenvectors.

[V,D,s] = condeig(A) is equivalent to

[V,D] = eig(A);
s = condeig(A);

Large condition numbers imply that A is near a matrix with multiple eigenvalues.

Extended Capabilities

Thread-Based Environment

Run code in the background using MATLAB® backgroundPool or accelerate code with Parallel Computing Toolbox™ ThreadPool.

This function fully supports thread-based environments. For more information, see Run MATLAB Functions in Thread-Based Environment.

Version History

Introduced before R2006a