ERROR: type Schur has no field Z

[JeffreySarnoff]

(v1.1) pkg> add GenericLinearAlgebra#master
  Updating registry at `C:\Users\jas\.julia\registries\General`
  Updating git-repo `https://github.com/JuliaRegistries/General.git`
  Updating git-repo `https://github.com/JuliaLinearAlgebra/GenericLinearAlgebra.jl.git`
 Resolving package versions...
  [14197337] ↑ GenericLinearAlgebra v0.1.0 ⇒ v0.1.0+ #master (https://github.com/JuliaLinearAlgebra/GenericLinearAlgebra.jl.git)

julia> using GenericLinearAlgebra
[ Info: Recompiling stale cache file C:\Users\jas\.julia\compiled\v1.1\GenericLinearAlgebra\Tm5A3.ji for GenericLinearAlgebra [14197337-ba66-59df-a3e3-ca00e7dcff7a]

julia> m = Complex{BigFloat}.(reshape(rand(Float32, 5*5),5,5))
5×5 Array{Complex{BigFloat},2}:
 0.132617+0.0im  0.742358+0.0im   0.183927+0.0im  0.632733+0.0im  0.177756+0.0im
 0.125482+0.0im  0.589812+0.0im   0.178626+0.0im  0.308561+0.0im  0.856793+0.0im
 0.769404+0.0im  0.827643+0.0im   0.967583+0.0im  0.829904+0.0im  0.670297+0.0im
 0.115544+0.0im  0.881652+0.0im   0.300636+0.0im  0.676362+0.0im   0.77726+0.0im
 0.670813+0.0im  0.857607+0.0im  0.0240812+0.0im   0.29316+0.0im  0.952149+0.0im

julia> log(m)
ERROR: type Schur has no field Z
Stacktrace:
 [1] getproperty(::GenericLinearAlgebra.Schur{Complex{BigFloat},Array{Complex{BigFloat},2}}, ::Symbol) at C:\Users\jas\.julia\packages\GenericLinearAlgebra\8M4H5\src\eigenGeneral.jl:72
 [2] log(::Array{Complex{BigFloat},2}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\LinearAlgebra\src\dense.jl:655
 [3] top-level scope at none:0

[andreasnoack]

Man. I should have checked but just assumed that the Schur factor was sufficient. Will fix.

[JeffreySarnoff]

thanks. This should open up a world of capability for ArbNumerics.

[JeffreySarnoff]

would you mind tagging a new release when this is good to go -- I had to take the package out of deps because of the old error, and it would be great to have it back.

[andreasnoack]

Sure. Will release once the new fix is in.

[JeffreySarnoff]

Is it ok to use both this and GenericSVD, or is that redundant?

[andreasnoack]

I think the SVD here should now fully cover the functionality of GenericSVD so yes, I think it would be redundant.

Regarding the fix here then it's slightly more tricky than anticipated so I'll have to continue working on this later. The 2014 version of Andreas tried to be very smart and the 2019 Andreas is now paying the price for that.

[JeffreySarnoff]

that's funny

[JeffreySarnoff]

two other related issues

julia> m = Complex{BigFloat}.(reshape(rand(Float32, 5*5),5,5))
5×5 Array{Complex{BigFloat},2}:
 0.340793+0.0im  0.399013+0.0im   0.776522+0.0im   0.46373+0.0im  0.672711+0.0im
 0.443168+0.0im  0.451965+0.0im   0.271673+0.0im  0.644408+0.0im  0.687101+0.0im
   0.6848+0.0im   0.10325+0.0im    0.49777+0.0im  0.475786+0.0im  0.419239+0.0im
 0.969252+0.0im  0.473123+0.0im  0.0753385+0.0im  0.993371+0.0im  0.170664+0.0im
 0.707709+0.0im  0.326565+0.0im   0.860123+0.0im  0.319933+0.0im  0.340225+0.0im

julia> m^0.5
ERROR: MethodError: no method matching iterate(::GenericLinearAlgebra.Schur{Complex{BigFloat},Array{Complex{BigFloat},2}})
Closest candidates are:
  iterate(::Core.SimpleVector) at essentials.jl:568
  iterate(::Core.SimpleVector, ::Any) at essentials.jl:568
  iterate(::ExponentialBackOff) at error.jl:199
  ...
Stacktrace:
 [1] indexed_iterate(::GenericLinearAlgebra.Schur{Complex{BigFloat},Array{Complex{BigFloat},2}}, ::Int64) at .\tuple.jl:66
 [2] schurpow(::Array{Complex{BigFloat},2}, ::Float64) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\LinearAlgebra\src\dense.jl:389
 [3] ^(::Array{Complex{BigFloat},2}, ::Float64) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\LinearAlgebra\src\dense.jl:434
 [4] top-level scope at none:0

julia> sqrt(m)
ERROR: type Schur has no field vectors
Stacktrace:
 [1] getproperty(::GenericLinearAlgebra.Schur{Complex{BigFloat},Array{Complex{BigFloat},2}}, ::Symbol) at C:\Users\jas\.julia\packages\GenericLinearAlgebra\8M4H5\src\eigenGeneral.jl:72
 [2] sqrt(::Array{Complex{BigFloat},2}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\LinearAlgebra\src\dense.jl:719
 [3] top-level scope at none:0

[baggepinnen]

The same error appears for hessenberg(matrix).Q. This is used here https://github.com/JuliaControl/ControlSystems.jl/blob/ec5ed51f84588783162ee7391cfbd3771bd03df2/src/freqresp.jl#L35

[lkapelevich]

I would like to use matrix logarithms and running into this as well

[chriscoey]

bump, I ran into this issue