scatter!(ax, Any[(0,0), (1,1)]) doesn't work

[goretkin]

using GLMakie

fig = Figure()
ax = Axis(fig[1, 1], title = "Demo")
scatter!(ax, Any[(0,0), (1,1)])
fig

gives

ERROR: LoadError: `Makie.convert_arguments` for the plot type Scatter{Tuple{Vector{Any}}} and its conversion trait PointBased() was unsuccessful.

The signature that could not be converted was:
::Vector{Any}
[...truncated. full output below...]

Here is one idiom for tightening the type of a Vector:

julia> identity.(Vector{Any}([(0, 0), (1, 1)]))
2-element Vector{Tuple{Int64, Int64}}:
 (0, 0)
 (1, 1)

I think Makie should handle this for the user.

Full error:

ERROR: LoadError: `Makie.convert_arguments` for the plot type Scatter{Tuple{Vector{Any}}} and its conversion trait PointBased() was unsuccessful.

The signature that could not be converted was:
::Vector{Any}

Makie needs to convert all plot input arguments to types that can be consumed by the backends (typically Arrays with Float32 elements).
You can define a method for `Makie.convert_arguments` (a type recipe) for these types or their supertypes to make this set of arguments convertible (See http://makie.juliaplots.org/stable/documentation/recipes/index.html).

Alternatively, you can define `Makie.convert_single_argument` for single arguments which have types that are unknown to Makie but which can be converted to known types and fed back to the conversion pipeline.

Stacktrace:
  [1] error(s::String)
    @ Base ./error.jl:33
  [2] convert_arguments(T::Type{Scatter{Tuple{Vector{Any}}}}, args::Vector{Any}; kw::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/conversions.jl:17
  [3] convert_arguments(T::Type{Scatter{Tuple{Vector{Any}}}}, args::Vector{Any})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/conversions.jl:8
  [4] plot!(scene::Scene, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any}; kw_attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/interfaces.jl:321
  [5] plot!(scene::Scene, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/interfaces.jl:308
  [6] plot!(la::Axis, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any}; kw_attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:658
  [7] plot!(la::Axis, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:653
  [8] plot!(P::Type{Scatter{ArgType} where ArgType}, ax::Axis, args::Vector{Any}; kw_attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:670
  [9] plot!(P::Type{Scatter{ArgType} where ArgType}, ax::Axis, args::Vector{Any})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:669
 [10] scatter!(::Axis, ::Vararg{Any, N} where N; attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ MakieCore ~/.julia/packages/MakieCore/S8PkO/src/recipes.jl:35
 [11] scatter!(::Axis, ::Vararg{Any, N} where N)
    @ MakieCore ~/.julia/packages/MakieCore/S8PkO/src/recipes.jl:35
 [12] top-level scope
    @ Untitled-2:5
in expression starting at Untitled-2:5

caused by: MethodError: no method matching convert_arguments(::Type{Scatter{Tuple{Vector{Any}}}}, ::Vector{Any})
Closest candidates are:
  convert_arguments(::Union{Type{Any}, Type{var"#s268"} where var"#s268"<:AbstractPlot}, ::Union{AbstractVector{T} where T, IntervalSets.Interval}, ::Distributions.Distribution) at /Users/goretkin/.julia/packages/Makie/gQOQF/src/stats/distributions.jl:21
  convert_arguments(::Union{Type{Any}, Type{var"#s268"} where var"#s268"<:AbstractPlot}, ::AbstractVector{T} where T, ::Function) at /Users/goretkin/.julia/packages/Makie/gQOQF/src/conversions.jl:546
  convert_arguments(::Union{Type{Any}, Type{var"#s268"} where var"#s268"<:AbstractPlot}, ::Any...; kw...) at /Users/goretkin/.julia/packages/Makie/gQOQF/src/conversions.jl:7
  ...
Stacktrace:
  [1] convert_arguments_individually(T::Type{Scatter{Tuple{Vector{Any}}}}, args::Vector{Any})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/conversions.jl:47
  [2] convert_arguments(T::Type{Scatter{Tuple{Vector{Any}}}}, args::Vector{Any}; kw::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/conversions.jl:14
  [3] convert_arguments(T::Type{Scatter{Tuple{Vector{Any}}}}, args::Vector{Any})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/conversions.jl:8
  [4] plot!(scene::Scene, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any}; kw_attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/interfaces.jl:321
  [5] plot!(scene::Scene, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/interfaces.jl:308
  [6] plot!(la::Axis, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any}; kw_attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:658
  [7] plot!(la::Axis, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:653
  [8] plot!(P::Type{Scatter{ArgType} where ArgType}, ax::Axis, args::Vector{Any}; kw_attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:670
  [9] plot!(P::Type{Scatter{ArgType} where ArgType}, ax::Axis, args::Vector{Any})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:669
 [10] scatter!(::Axis, ::Vararg{Any, N} where N; attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ MakieCore ~/.julia/packages/MakieCore/S8PkO/src/recipes.jl:35
 [11] scatter!(::Axis, ::Vararg{Any, N} where N)
    @ MakieCore ~/.julia/packages/MakieCore/S8PkO/src/recipes.jl:35
 [12] top-level scope
    @ Untitled-2:5

caused by: MethodError: no method matching convert_arguments(::PointBased, ::Vector{Any})
Closest candidates are:
  convert_arguments(::PointBased, ::AbstractVector{T} where T, ::AbstractVector{T} where T, ::AbstractMatrix{T} where T) at /Users/goretkin/.julia/packages/Makie/gQOQF/src/conversions.jl:104
  convert_arguments(::SurfaceLike, ::AbstractVector{T1}, ::AbstractVector{T2}, ::Function) where {T1, T2} at /Users/goretkin/.julia/packages/Makie/gQOQF/src/conversions.jl:348
  convert_arguments(::Type{var"#s740"} where var"#s740"<:(Combined{Makie.qqplot, ArgType} where ArgType), ::Any...; kwargs...) at /Users/goretkin/.julia/packages/Makie/gQOQF/src/stats/distributions.jl:40
  ...
Stacktrace:
  [1] convert_arguments(T::Type{Scatter{Tuple{Vector{Any}}}}, args::Vector{Any}; kw::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/conversions.jl:10
  [2] convert_arguments(T::Type{Scatter{Tuple{Vector{Any}}}}, args::Vector{Any})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/conversions.jl:8
  [3] plot!(scene::Scene, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any}; kw_attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/interfaces.jl:321
  [4] plot!(scene::Scene, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any})
    @ Makie ~/.julia/packages/Makie/gQOQF/src/interfaces.jl:308
  [5] plot!(la::Axis, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any}; kw_attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:658
  [6] plot!(la::Axis, P::Type{Scatter{ArgType} where ArgType}, attributes::Attributes, args::Vector{Any})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:653
  [7] plot!(P::Type{Scatter{ArgType} where ArgType}, ax::Axis, args::Vector{Any}; kw_attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:670
  [8] plot!(P::Type{Scatter{ArgType} where ArgType}, ax::Axis, args::Vector{Any})
    @ Makie.MakieLayout ~/.julia/packages/Makie/gQOQF/src/makielayout/layoutables/axis.jl:669
  [9] scatter!(::Axis, ::Vararg{Any, N} where N; attributes::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ MakieCore ~/.julia/packages/MakieCore/S8PkO/src/recipes.jl:35
 [10] scatter!(::Axis, ::Vararg{Any, N} where N)
    @ MakieCore ~/.julia/packages/MakieCore/S8PkO/src/recipes.jl:35
 [11] top-level scope
    @ Untitled-2:5

[ffreyer]

Fixed in 0.21