Scilab 6.0.1
Please note that the recommended version of Scilab is 2024.1.0. This page might be outdated.
See the recommended documentation of this function
colcomp
column compression, kernel, nullspace
Syntax
[W,rk]=colcomp(A [,flag] [,tol])
Arguments
- A
real or complex matrix
- flag
character string
- tol
real number
- W
square non-singular matrix (change of basis)
- rk
integer (rank of
A
)
Description
Column compression of A
: Ac = A*W
is
column compressed i.e
Ac=[0,Af]
with Af
full column rank,
rank(Af
) = rank(A
) = rk
.
flag
and tol
are optional parameters: flag = 'qr'
or 'svd'
(default is 'svd'
).
tol
= tolerance parameter (of order %eps
as default value).
The ma-rk
first columns of W
span the kernel of A
when size(A)=(na,ma)
See also
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