BandedMatrices.jl

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Error on using with latest release?

1

```julia WARNING: could not import ArrayLayouts.TridiagonalLayout into BandedMatrices ERROR: LoadError: LoadError: UndefVarError: TridiagonalLayout not defined Stacktrace: [1] top-level scope at /home/travis/.julia/packages/BandedMatrices/cvauE/src/interfaceimpl.jl:47 [2] include(::Module, ::String) at ./Base.jl:377 [3] include(::String) at /home/travis/.julia/packages/BandedMatrices/cvauE/src/BandedMatrices.jl:1...

ChrisRackauckas

Not sure how to handle incompatible block-size, maybe assume diagonal is correct

dlfivefifty

Performance relative to sparse

7

On Julia 1.1. I did a quick performance test and am finding that Banded work well on the linear solve, but are much slower than the basic Sparse for other...

jlperla

Why so picky with length of diagonals?

2

I found it strangely difficult to construct banded matrices. If I use the constructor ```julia BandedMatrix((0=>Fill(1,n), ...), (m,n)) ``` why do I have to specify both the size of the...

baggepinnen

sub_materialize axes and fill

1

dlfivefifty

Add banded `kron`

12

MikaelSlevinsky

I think now that the more experimental lazy-banded matrix support has been moved out the API should be pretty stable. Some possible changes we might want to make first: 1....

dlfivefifty

https://github.com/JuliaMatrices/BandedMatrices.jl/blob/master/src/interfaceimpl.jl needs to add Bidiagonal to its supported list.

ChrisRackauckas

```julia julia> n = 10 10 julia> B = Symmetric(brand(Float64, n, 2, 2) + 2I, :U) 10×10 Symmetric{Float64,BandedMatrix{Float64,Array{Float64,2},Base.OneTo{Int64}}}: 2.58182 0.821984 0.404936 ⋅ … ⋅ ⋅ ⋅ 0.821984 2.57455 0.996848 0.381813...

MikaelSlevinsky

dlfivefifty