SciML / SciML/ComponentArrays.jl

getting "Only homogeneous arrays are allowed" error for Vector{SVector}

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Julia
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Description

I am new to this package and it may be possible that I am misusing it, but

using ComponentArrays, StaticArrays
a = [zeros(3) for _ in 1:5]
ComponentVector((; a))          # works fine
b = zeros(SVector{3}, 5)
ComponentArray((; b))           # errors

stacktrace:

ERROR: Only homogeneous arrays are allowed.
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:35
 [2] make_idx(data::Vector{Float64}, x::Vector{SVector{3}}, last_val::Int64)
   @ ComponentArrays ~/.julia/packages/ComponentArrays/NoToB/src/componentarray.jl:207
 [3] make_idx(data::Vector{Float64}, nt::@NamedTuple{b::Vector{SVector{3}}}, last_val::Int64)
   @ ComponentArrays ~/.julia/packages/ComponentArrays/NoToB/src/componentarray.jl:161
 [4] make_carray_args(A::Type{Vector}, nt::@NamedTuple{b::Vector{SVector{3}}})
   @ ComponentArrays ~/.julia/packages/ComponentArrays/NoToB/src/componentarray.jl:151
 [5] make_carray_args(nt::@NamedTuple{b::Vector{SVector{3}}})
   @ ComponentArrays ~/.julia/packages/ComponentArrays/NoToB/src/componentarray.jl:144
 [6] ComponentArray(nt::@NamedTuple{b::Vector{SVector{3}}})
   @ ComponentArrays ~/.julia/packages/ComponentArrays/NoToB/src/componentarray.jl:64
 [7] top-level scope
   @ REPL[34]:1

versions:

julia> VERSION
v"1.10.0"

(jl_BH2t1B) pkg> st
Status `/tmp/jl_BH2t1B/Project.toml`
  [b0b7db55] ComponentArrays v0.15.7
  [90137ffa] StaticArrays v1.9.0

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Research direction

Reproduce the example with Julia 1.10, ComponentArrays 0.15.7, and StaticArrays 1.9.0, then inspect make_idx and make_carray_args in src/componentarray.jl around the stack-trace locations. The fix is done when ComponentArray((; b)) accepts the Vector{SVector{3}} example without the homogeneous-arrays error.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
data
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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