rank (MathScript RT Module Function)

LabVIEW 2012 MathScript RT模块帮助

版本日期:June 2012

产品编号:373123C-0118

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(仅限Windows)

Owning Class: linalgebra

Requires: MathScript RT Module

Syntax

n = rank(a)

n = rank(a, tol)

Description

Returns the rank of a matrix. LabVIEW determines the numerical rank according to the number of singular values larger than the tolerance.

Examples

Inputs

Name Description
a Specifies a matrix.
tol Specifies the tolerance of a. tol is a scalar. If you do not specify tol, LabVIEW computes the tolerance using the following equation: tol = max(size(a))*norm(a)*eps.

Outputs

Name Description
n Returns the rank of a. n is an integer.

Details

The following table lists the support characteristics of this function.

Supported in the LabVIEW Run-Time Engine Yes
Supported on RT targets Yes
Suitable for bounded execution times on RT Not characterized

Examples

B = [1, 2, 3; 4, 5, 6];
A = B'*B
rank(A)

Related Topics

svd

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