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Re: matrix functions
From: |
Jordi Gutiérrez Hermoso |
Subject: |
Re: matrix functions |
Date: |
Tue, 21 Dec 2010 08:02:32 -0600 |
On 21 December 2010 04:05, Bård Skaflestad <address@hidden> wrote:
> I was about to suggest you use the 'funm' function, but now I see that
> 'funm' is only available (by default) in That Other Software. On the
> other hand, the 'linear-algebra' add-on package from OctaveForge does
> contain a 'funm' implementation.
Huh, that's awkward, because the docstring for expm mentions funm,
which isn't included in core. I see the funm implementation is quite
naïve and relies on the matrix being diagonalisable. Even worse, it
calls inv instead of using the backslash operator. Is this the best
that can be done in general? Surely if expm works for defective
matrices, something can be done in general if we assume analytic
functions, which funm is assuming anyways?
- Jordi G. H.
- matrix functions, CdeMills, 2010/12/21
- Re: matrix functions, Bård Skaflestad, 2010/12/21
- Re: matrix functions, CdeMills, 2010/12/21
- Re: matrix functions,
Jordi Gutiérrez Hermoso <=
- Re: matrix functions, Bård Skaflestad, 2010/12/21
- Re: matrix functions, Bård Skaflestad, 2010/12/21
- Re: matrix functions, Philip Nienhuis, 2010/12/21
- Re: matrix functions, Jordi Gutiérrez Hermoso, 2010/12/22
- Re: matrix functions, Philip Nienhuis, 2010/12/22
- Re: matrix functions, Miroslaw Kwasniak, 2010/12/28
- Re: matrix functions, Jordi Gutiérrez Hermoso, 2010/12/28