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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Diagonal matrices diff
- From: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>
- Date: Sun, 10 May 2009 16:55:29 +0200
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2009/5/10 Gael Guennebaud <gael.guennebaud@xxxxxxxxx>:
> Hi,
>
> I did not read your patch carefully (no time right now) but initially
> I thought it would be better to keep DiagonalCoeffs and add a new Band
> class (for compilation time, more specialized API, etc...).
There's a misunderstanding. By "Band" I mean exactly one
diagonal/subdiagonal/superdiagonal. I'm using "band" as a shorter,
unified synonym for all that.
The only difference between Band and DiagonalCoeffs, is that now the
index (positive for superdiagonal, negative for subdiagonal) can be a
runtime variable.
When I add a class for banded matrix allowing multiple bands, I'll
call it "BandedMatrix".
Is this terminology OK?
> see what I wrote:
> http://eigen.tuxfamily.org/index.php?title=SpecialMatrix#skyline.2Fband_matrix
Yes, I read it, btw i made comments here,
http://listengine.tuxfamily.org/lists.tuxfamily.org/eigen/2009/03/msg00130.html
i'd be interested in your thoughts before i do BandedMatrix.
Cheers,
Benoit