I realized BLAS.gbmv works with both orderings using the âTâ option, so its
probably worth supporting both formats.
Anyone know if there is a BandedMatrix*BandedMatrix routine in BLAS/LAPack? I
have it implemented in Julia, but it would probably be a lot faster using an
inbuilt version.
> On
On Sunday, March 27, 2016 06:43:19 PM Sheehan Olver wrote:
> I've split out the BandedMatrix data structure in BandedMatrices.jl:
>
> https://github.com/ApproxFun/BandedMatrices.jl
>
> Right now the entries are in the "wrong" order for LAPack: the rows are
> stored (instead of the columns)
I've split out the BandedMatrix data structure in BandedMatrices.jl:
https://github.com/ApproxFun/BandedMatrices.jl
Right now the entries are in the "wrong" order for LAPack: the rows are
stored (instead of the columns) . I'm debating whether to support both
orderings, or replace the
+1 for a specific standalone BandedMatrices package. Once it's up and
running and registered, could even move the Lapack bindings for gb*
functions out to the package (and pb* and sb* if you also have symmetric),
since we don't have a type for them in base. I think it'll be important to
work
It would be great to have a broader SparseFormats.jl package.
Maybe in the time being I'll start it as BandedMatrices.jl (since that's
already implemented) which can be renamed later.
Sheehan
Sent from my iPhone
> On 24 Mar 2016, at 03:07, Christoph Ortner wrote:
Here is a short list that in the long-run would be useful:
* compressed row
* triplet
* block-sparse matrices
(* linked-list variants of CC and CR??)
C
On Wednesday, 23 March 2016 13:53:30 UTC, Tim Holy wrote:
>
> Base has UniformScaling, Diagonal, Bidiagonal, Tridiagonal,
>
Base has UniformScaling, Diagonal, Bidiagonal, Tridiagonal, SymTridiagonal,
UpperTriangular, LowerTriangular, in addition to SparseVector and
SparseMatrixCSC. But not general banded.
--Tim
On Wednesday, March 23, 2016 04:19:22 AM Christoph Ortner wrote:
> I'd be interested as well; more
I'd be interested as well; more generally: does Julia still only have CCS
implemented? For me it would sound productive to start a general
SparseFormats.jl (or similar) package and collect various other formats,
which could eventually be incorporated into Base or a standard-library.
Christoph
+1 from me. I don't have an immediate need, but it seems to be an obvious hole
in our coverage of special matrices.
Best,
--Tm
On Tuesday, March 22, 2016 05:44:48 PM Sheehan Olver wrote:
> I'm thinking of splitting out the support for a BandedMatrix data structure
> from ApproxFun to a
I'm thinking of splitting out the support for a BandedMatrix data structure
from ApproxFun to a stand-alone package. Is there interest in this, or
existing packages that do the same thing?
Sheehan
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