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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Band diagonal matrices
- From: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>
- Date: Sat, 19 Jun 2010 00:12:43 -0400
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And we already have Skyline matrices in unsupported/
Benoit
2010/6/18 Gael Guennebaud <gael.guennebaud@xxxxxxxxx>:
> Note that for band matrices, we already have a BandMatrix class
> offering a banded storage which allows for more optimized algorithms.
>
> gael
>
> On Fri, Jun 18, 2010 at 8:13 PM, Sameer Agarwal
> <sameeragarwal@xxxxxxxxxx> wrote:
>> One thing I forgot to mention in my email about sparse matrices earlier is
>> support for band diagonal and block band diagonal matrices. They occur often
>> enough in problems, but also can arise in the construction of
>> preconditioners. In those cases we should think about supporting
>> 1. Constructor to build band diagonal matrices from a set of vectors.
>> 2. Constructor to extract a set of bands from a given sparse matrix.
>> 3. Band diagonal solvers.
>> Sameer
>>
>
>
>