Cryptic error message when using PairPlots without Makie backend loaded

[pankgeorg]

I believe there is an issue in the show method:

stacktrace

getproperty(::Missing, ::Symbol)@Base.jl:37
var"#getscreen#1013"(::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}, ::typeof(Makie.getscreen), ::Missing, ::Makie.Scene, ::IOContext{IOBuffer}, ::Vararg{Any})@display.jl:326
getscreen(::Missing, ::Makie.Scene, ::IOContext{IOBuffer}, ::Vararg{Any})@display.jl:324
show(::IOContext{IOBuffer}, ::MIME{Symbol("image/svg+xml")}, ::Makie.Figure)@display.jl:203
var"#show#6"(::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}, ::typeof(show), ::IOContext{IOBuffer}, ::MIME{Symbol("image/svg+xml")}, ::DisplayAs.Showable{MIME{Symbol("image/svg+xml")}})@DisplayAs.jl:82
show(::IOContext{IOBuffer}, ::MIME{Symbol("image/svg+xml")}, ::DisplayAs.Showable{MIME{Symbol("image/svg+xml")}})@DisplayAs.jl:82
show_richest(::IOContext{IOBuffer}, ::Any)@PlutoRunner.jl:1170
[email protected]:1095[inlined]
format_output_default(::Any, ::Any)@PlutoRunner.jl:995
#format_output#[email protected]:1012[inlined]
#[email protected]:904[inlined]
var"#with_io_to_logs#115"(::Bool, ::Base.CoreLogging.LogLevel, ::typeof(Main.PlutoRunner.with_io_to_logs), ::Main.PlutoRunner.var"#53#56"{Module, DisplayAs.Showable{MIME{Symbol("image/svg+xml")}}, Dict{Tuple{UInt64, Int64}, Int64}})@PlutoRunner.jl:2386
(::Main.PlutoRunner.var"#119#120"{Bool, Base.CoreLogging.LogLevel, Main.PlutoRunner.var"#53#56"{Module, DisplayAs.Showable{MIME{Symbol("image/svg+xml")}}, Dict{Tuple{UInt64, Int64}, Int64}}})()@PlutoRunner.jl:2410
with_logstate(::Function, ::Any)@logging.jl:514
[email protected]:626[inlined]
#with_logger_and_io_to_logs#[email protected]:2409[inlined]
var"#formatted_result_of#50"(::Bool, ::typeof(Main.PlutoRunner.formatted_result_of), ::Base.UUID, ::Base.UUID, ::Bool, ::Vector{String}, ::Nothing, ::Module)@PlutoRunner.jl:903
kwcall(::NamedTuple{(:capture_stdout,), Tuple{Bool}}, ::typeof(Main.PlutoRunner.formatted_result_of), ::Base.UUID, ::Base.UUID, ::Bool, ::Vector{String}, ::Nothing, ::Module)@PlutoRunner.jl:877
top-level [email protected]:527

`pairplot(randn(3,3)) |> DisplayAs.SVG`

PairPlots.jl v1.0.0
DisplayAs v0.1.6
Pluto v0.19.19

[sefffal]

Thanks for the report.
Just to confirm, did you load a Makie backend? (Eg CairoMakie)

[pankgeorg]

That explains it!

Ref this Pluto PR

I'll test with CairoMakie

[pankgeorg]

I can make it work if I do using CairoMakie, Makie before using PairPlots, so I'll close this. Thanks!

[sefffal]

Thanks @pankgeorg. I'm going to leave this open for now as the error message should be improved.

[sefffal]

I just tested this in a terminal and I get a pretty good error message from Makie itself:

julia> pairplot(t)
Error showing value of type Makie.Figure:
ERROR: No backend available!
Make sure to also `import/using` a backend (GLMakie, CairoMakie, WGLMakie).

If you imported GLMakie, it may have not built correctly.
In that case, try `]build GLMakie` and watch out for any warnings.

Stacktrace:
   [1-9] ⋮ internal
       @ Base, Makie, AbbreviatedStackTraces, REPL, Unknown
    [10] (::REPL.var"#do_respond#80"{Bool, Bool, …})(s::REPL.LineEdit.MIState, buf::Any, ok::Bool)
       @ REPL ~/julia/usr/share/julia/stdlib/v1.9/REPL/src/REPL.jl:897
    [11] (::VSCodeServer.var"#98#101"{REPL.var"#do_respond#80"{Bool, Bool, …}})(mi::REPL.LineEdit.MIState, buf::IOBuffer, ok::Bool)
       @ VSCodeServer ~/.vscode-server/extensions/julialang.language-julia-1.45.1/scripts/packages/VSCodeServer/src/repl.jl:122
 [12-15] ⋮ internal
       @ REPL.LineEdit, REPL, Unknown
Use `err` to retrieve the full stack trace.

When you used PairPlot by itself (not with DisplayAs) was there an error message? Or did it just print Figure()?

[pankgeorg]

It just printed Figure()