Scilab 5.3.0
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- Linear Algebra
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Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
See the recommended documentation of this function
rank
rank
Calling Sequence
[i]=rank(X) [i]=rank(X,tol)
Arguments
- X
real or complex matrix
- tol
nonnegative real number
Description
rank(X) is the numerical rank of X
i.e. the number of singular values of X that are larger than
norm(size(X),'inf') * norm(X) * %eps.
rank(X,tol) is the number of singular values of
X that are larger than tol.
Note that the default value of tol is proportional to
norm(X). As a consequence
rank([1.d-80,0;0,1.d-80]) is 2 !.
Examples
rank([1.d-80,0;0,1.d-80]) rank([1,0;0,1.d-80])
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