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Display triangular matrices with dots #127

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merged 2 commits into from
Jan 10, 2024
Merged

Display triangular matrices with dots #127

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Display triangular matrices with dots
jishnub Jan 3, 2024
82469f9
Merge branch 'master' into jishnub/dotsdisplay
jishnub Jan 10, 2024
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8 changes: 8 additions & 0 deletions src/special.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -249,3 +249,11 @@ triu(A::TriangularToeplitz, k::Integer=0) = triu!(_copymutable(A), k)

isdiag(A::Union{Circulant, LowerTriangularToeplitz, SymmetricToeplitz}) = all(iszero, @view _vc(A)[2:end])
isdiag(A::UpperTriangularToeplitz) = all(iszero, @view _vr(A)[2:end])

# display triangular matrices with dots
function Base.replace_in_print_matrix(A::UpperTriangularToeplitz, i::Integer, j::Integer, s::AbstractString)
i <= j ? s : Base.replace_with_centered_mark(s)
end
function Base.replace_in_print_matrix(A::LowerTriangularToeplitz, i::Integer, j::Integer, s::AbstractString)
i >= j ? s : Base.replace_with_centered_mark(s)
end
14 changes: 14 additions & 0 deletions test/runtests.jl
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Expand Up @@ -641,6 +641,20 @@ end
@test inv(TL)::TriangularToeplitz ≈ inv(Matrix(TL))
end

@testset "display" begin
UT = UpperTriangularToeplitz([1,2,3,4])
U = UpperTriangular(Matrix(UT))
st = sprint(show, "text/plain", UT)
s = sprint(show, "text/plain", U)
@test split(st, '\n')[2:end] == split(s, '\n')[2:end]

LT = LowerTriangularToeplitz([1,2,3,4])
L = LowerTriangular(Matrix(LT))
st = sprint(show, "text/plain", LT)
s = sprint(show, "text/plain", L)
@test split(st, '\n')[2:end] == split(s, '\n')[2:end]
end

@testset "eigen" begin
for T in (UpperTriangularToeplitz, LowerTriangularToeplitz)
for p in ([1:6;], rand(ComplexF64, 5))
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