home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Amiga Format CD 46
/
Amiga Format CD46 (1999-10-20)(Future Publishing)(GB)[!][issue 1999-12].iso
/
-in_the_mag-
/
reader_requests
/
scilab
/
man
/
man-part2
/
cat1
/
svd.1
< prev
next >
Wrap
Text File
|
1999-09-16
|
973b
|
67 lines
svd(G) Scilab Function svd(G)
NAME
svd - singular value decomposition
CALLING SEQUENCE
s=svd(X)
[U,S,V]=svd(X)
[U,S,V,rk]=svd(X [,tol])
PARAMETERS
X : a real or complex matrix
s : real vector (singular values)
S : real diagonal matrix (singular values)
U,V : orthogonal or unitary square matrices (singular vectors).
tol : real number
DESCRIPTION
[U,S,V] = svd(X) produces a diagonal matrix S , of the same dimension as X
and with nonnegative diagonal elements in decreasing order, and unitary
matrices U and V so that X = U*S*V'.
s = svd(X) by itself, returns a vector s containing the singular values.
[U,S,V,rk]=svd(X,tol) gives in addition rk, the numerical rank of X i.e.
the number of singular values larger than tol.
The default value of tol is the same as in rank.
SEE ALSO
rank, qr, colcomp, rowcomp.