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Scilab manual >> Linear Algebra > orth

orth

orthogonal basis

Calling Sequence

Q=orth(A)

Arguments

A

real or complex matrix

Q

real or complex matrix

Description

Q=orth(A) returns Q, an orthogonal basis for the span of A. Range(Q) = Range(A) and Q'*Q=eye.

The number of columns of Q is the rank of A as determined by the QR algorithm.

Examples

A=rand(5,3)*rand(3,4);
[X,dim]=rowcomp(A);X=X';
svd([orth(A),X(:,1:dim)])

See Also

<< nlev Linear Algebra pbig >>
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with contributors 		Last updated:
Wed Jan 26 16:23:41 CET 2011