`bat_report()` error: Tuple field type cannot be `Union{}`

[gipert]

Is this a bug? The samples seem sane...

using StatsBase
using Statistics
using Distributions
using BAT
using DensityInterface
using IntervalSets

counts = (pass = [3, 102, 3], fail = [3, 4, 1])

likelihood = let data = counts

    function logpdf_poisson(ν, μ)
        return logpdf(Poisson(μ + eps(μ)), ν)
    end

    logfuncdensity(function (parameters)
        p = parameters
        return (
            logpdf_poisson(counts.pass[1] + counts.pass[3], 2 * p.μb * p.ϵb) +
            logpdf_poisson(counts.fail[1] + counts.fail[3], 2 * p.μb * (1 - p.ϵb)) +
            logpdf_poisson(counts.pass[2], p.μb * p.ϵb + p.μs * p.ϵs) +
            logpdf_poisson(counts.fail[2], p.μb + p.μs - p.μb * p.ϵb - p.μs * p.ϵs)
        )      
    end)
end

prior = distprod(
    μb = 0..200,
    μs = 0..200,
    ϵb = 0..(1-eps()),
    ϵs = 0..(1-eps()),
)

posterior = PosteriorMeasure(likelihood, prior)
samples = bat_sample(posterior, MCMCSampling(mcalg = MetropolisHastings(), nsteps = 10^5, nchains = 4)).result
bat_report(samples)

Output:

Tuple field type cannot be Union{}

Stacktrace:
 [1] #s1#1
   @ ~/.julia/packages/TypedTables/ItVth/src/TypedTables.jl:22 [inlined]
 [2] var"#s1#1"(names::Any, T::Any, ::Any, a::Any)
   @ TypedTables ./none:0
 [3] (::Core.GeneratedFunctionStub)(::UInt64, ::LineNumberNode, ::Any, ::Vararg{Any})
   @ Core ./boot.jl:602
 [4] _table(nt::@NamedTuple{parameter::Vector{Symbol}, value::Vector{Union{}}})
   @ TypedTables ~/.julia/packages/TypedTables/ItVth/src/Table.jl:31
 [5] Table
   @ ~/.julia/packages/TypedTables/ItVth/src/Table.jl:24 [inlined]
 [6] fixed_parameter_table(smplv::StructArrays.StructVector{DensitySample{@NamedTuple{μb::Float64, μs::Float64, ϵb::Float64, ϵs::Float64}, Float64, Int64, BAT.MCMCSampleID, Nothing}, @NamedTuple{v::ValueShapes.ShapedAsNTArray{@NamedTuple{μb::Float64, μs::Float64, ϵb::Float64, ϵs::Float64}, 1, ArraysOfArrays.ArrayOfSimilarArrays{Float64, 1, 1, 2, ElasticArrays.ElasticMatrix{Float64, Vector{Float64}}}, ValueShapes.NamedTupleShape{(:μb, :μs, :ϵb, :ϵs), NTuple{4, ValueShapes.ValueAccessor{ValueShapes.ScalarShape{Real}}}, NamedTuple}}, logd::Vector{Float64}, weight::Vector{Int64}, info::StructArrays.StructVector{BAT.MCMCSampleID, @NamedTuple{chainid::Vector{Int32}, chaincycle::Vector{Int32}, stepno::Vector{Int64}, sampletype::Vector{Int64}}, Int64}, aux::Vector{Nothing}}, Int64})
   @ BAT ~/.julia/packages/BAT/pYfQ6/src/statistics/report.jl:63
 [7] bat_report!(md::Markdown.MD, smplv::StructArrays.StructVector{DensitySample{@NamedTuple{μb::Float64, μs::Float64, ϵb::Float64, ϵs::Float64}, Float64, Int64, BAT.MCMCSampleID, Nothing}, @NamedTuple{v::ValueShapes.ShapedAsNTArray{@NamedTuple{μb::Float64, μs::Float64, ϵb::Float64, ϵs::Float64}, 1, ArraysOfArrays.ArrayOfSimilarArrays{Float64, 1, 1, 2, ElasticArrays.ElasticMatrix{Float64, Vector{Float64}}}, ValueShapes.NamedTupleShape{(:μb, :μs, :ϵb, :ϵs), NTuple{4, ValueShapes.ValueAccessor{ValueShapes.ScalarShape{Real}}}, NamedTuple}}, logd::Vector{Float64}, weight::Vector{Int64}, info::StructArrays.StructVector{BAT.MCMCSampleID, @NamedTuple{chainid::Vector{Int32}, chaincycle::Vector{Int32}, stepno::Vector{Int64}, sampletype::Vector{Int64}}, Int64}, aux::Vector{Nothing}}, Int64})
   @ BAT ~/.julia/packages/BAT/pYfQ6/src/statistics/report.jl:95
 [8] bat_report(obj::StructArrays.StructVector{DensitySample{@NamedTuple{μb::Float64, μs::Float64, ϵb::Float64, ϵs::Float64}, Float64, Int64, BAT.MCMCSampleID, Nothing}, @NamedTuple{v::ValueShapes.ShapedAsNTArray{@NamedTuple{μb::Float64, μs::Float64, ϵb::Float64, ϵs::Float64}, 1, ArraysOfArrays.ArrayOfSimilarArrays{Float64, 1, 1, 2, ElasticArrays.ElasticMatrix{Float64, Vector{Float64}}}, ValueShapes.NamedTupleShape{(:μb, :μs, :ϵb, :ϵs), NTuple{4, ValueShapes.ValueAccessor{ValueShapes.ScalarShape{Real}}}, NamedTuple}}, logd::Vector{Float64}, weight::Vector{Int64}, info::StructArrays.StructVector{BAT.MCMCSampleID, @NamedTuple{chainid::Vector{Int32}, chaincycle::Vector{Int32}, stepno::Vector{Int64}, sampletype::Vector{Int64}}, Int64}, aux::Vector{Nothing}}, Int64})
   @ BAT ~/.julia/packages/BAT/pYfQ6/src/statistics/report.jl:17
 [9] top-level scope
   @ In[39]:1

[oschulz]

That looks like a bug, TypedTables.Table(samples.v) works fine, for example. I'll look into it.

[oschulz]

Should be fixed now.