FileIO.jl icon indicating copy to clipboard operation
FileIO.jl copied to clipboard

Published 20 hours ago • verified publisher icon JuliaIO

Confusing error when saving the wrong thing

Open ericphanson opened this issue 3 years ago • 0 comments 

julia> using CairoMakie

julia> fig = lines(rand(10));

julia> save("test.png", fig) # works
CairoScreen{Cairo.CairoSurfaceBase{UInt32}} with surface:
Cairo.CairoSurfaceBase{UInt32}(Ptr{Nothing} @0x00007fef60cecfa0, 800.0, 600.0)

julia> save("test.png", (fig, )) # wrong argument gives confusing errors
Errors encountered while save FileIO.File{FileIO.DataFormat{:PNG}, String}("test.png").
All errors:
===========================================
ImageIO writer error: neither save nor fileio_save is defined
  due to MethodError(ImageIO.save, (FileIO.File{FileIO.DataFormat{:PNG}, String}("test.png"), (Scene (800px, 600px):
  18 Plots:
    ├ Combined{Makie.poly, Tuple{Vector{Vector{Point{2, Float32}}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ MakieCore.Text{Tuple{String}}
    ├ Lines{Tuple{Vector{Point{2, Float32}}}}
    ├ MakieCore.Text{Tuple{Vector{Tuple{AbstractString, Point{2, Float32}}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ MakieCore.Text{Tuple{String}}
    ├ Lines{Tuple{Vector{Point{2, Float32}}}}
    ├ MakieCore.Text{Tuple{Vector{Tuple{AbstractString, Point{2, Float32}}}}}
    ├ Lines{Tuple{Vector{Point{2, Float32}}}}
    ├ Lines{Tuple{Vector{Point{2, Float32}}}}
    └ MakieCore.Text{Tuple{String}}
  1 Child Scene:
    └ Scene (724px, 541px),)), 0x0000000000007aad)
  Will try next loader.

===========================================
ArgumentError: Package QuartzImageIO [dca85d43-d64c-5e67-8c65-017450d5d020] is required but does not seem to be installed:
 - Run `Pkg.instantiate()` to install all recorded dependencies.

===========================================
ArgumentError: Package ImageMagick [6218d12a-5da1-5696-b52f-db25d2ecc6d1] is required but does not seem to be installed:
 - Run `Pkg.instantiate()` to install all recorded dependencies.

===========================================
ArgumentError: Argument does not support conversion to png.
===========================================

Fatal error:
ERROR: ImageIO writer error: neither save nor fileio_save is defined
  due to MethodError(ImageIO.save, (FileIO.File{FileIO.DataFormat{:PNG}, String}("test.png"), (Scene (800px, 600px):
  18 Plots:
    ├ Combined{Makie.poly, Tuple{Vector{Vector{Point{2, Float32}}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ MakieCore.Text{Tuple{String}}
    ├ Lines{Tuple{Vector{Point{2, Float32}}}}
    ├ MakieCore.Text{Tuple{Vector{Tuple{AbstractString, Point{2, Float32}}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ LineSegments{Tuple{Vector{Point{2, Float32}}}}
    ├ MakieCore.Text{Tuple{String}}
    ├ Lines{Tuple{Vector{Point{2, Float32}}}}
    ├ MakieCore.Text{Tuple{Vector{Tuple{AbstractString, Point{2, Float32}}}}}
    ├ Lines{Tuple{Vector{Point{2, Float32}}}}
    ├ Lines{Tuple{Vector{Point{2, Float32}}}}
    └ MakieCore.Text{Tuple{String}}
  1 Child Scene:
    └ Scene (724px, 541px),)), 0x0000000000007aad)
  Will try next loader.

Stacktrace:
  [1] #invokelatest#2
    @ ./essentials.jl:716 [inlined]
  [2] invokelatest
    @ ./essentials.jl:714 [inlined]
  [3] action(call::Symbol, libraries::Vector{Union{Base.PkgId, Module}}, file::FileIO.Formatted, args::Tuple{Makie.FigureAxisPlot}; options::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ FileIO ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:217
  [4] action
    @ ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:197 [inlined]
  [5] action(call::Symbol, libraries::Vector{Union{Base.PkgId, Module}}, sym::Symbol, file::String, args::Tuple{Makie.FigureAxisPlot}; options::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ FileIO ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:185
  [6] action
    @ ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:185 [inlined]
  [7] #save#20
    @ ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:129 [inlined]
  [8] save(file::String, args::Tuple{Makie.FigureAxisPlot})
    @ FileIO ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:126
  [9] top-level scope
    @ REPL[23]:1
 [10] eval
    @ ./boot.jl:373 [inlined]
 [11] eval_user_input(ast::Any, backend::REPL.REPLBackend)
    @ REPL /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.7/REPL/src/REPL.jl:150
 [12] repl_backend_loop(backend::REPL.REPLBackend)
    @ REPL /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.7/REPL/src/REPL.jl:241
 [13] start_repl_backend(backend::REPL.REPLBackend, consumer::Any)
    @ REPL /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.7/REPL/src/REPL.jl:226
 [14] run_repl(repl::REPL.AbstractREPL, consumer::Any; backend_on_current_task::Bool)
    @ REPL /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.7/REPL/src/REPL.jl:359
 [15] run_repl(repl::REPL.AbstractREPL, consumer::Any)
    @ REPL /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.7/REPL/src/REPL.jl:346
 [16] (::Base.var"#919#921"{Bool, Bool, Bool})(REPL::Module)
    @ Base ./client.jl:394
 [17] #invokelatest#2
    @ ./essentials.jl:716 [inlined]
 [18] invokelatest
    @ ./essentials.jl:714 [inlined]
 [19] run_main_repl(interactive::Bool, quiet::Bool, banner::Bool, history_file::Bool, color_set::Bool)
    @ Base ./client.jl:379
 [20] exec_options(opts::Base.JLOptions)
    @ Base ./client.jl:309
 [21] _start()
    @ Base ./client.jl:495
Stacktrace:
 [1] handle_error(e::FileIO.WriterError, q::Base.PkgId, bt::Vector{Union{Ptr{Nothing}, Base.InterpreterIP}})
   @ FileIO ~/.julia/packages/FileIO/JA3Vl/src/error_handling.jl:61
 [2] handle_exceptions(exceptions::Vector{Tuple{Any, Union{Base.PkgId, Module}, Vector}}, action::String)
   @ FileIO ~/.julia/packages/FileIO/JA3Vl/src/error_handling.jl:56
 [3] action(call::Symbol, libraries::Vector{Union{Base.PkgId, Module}}, file::FileIO.Formatted, args::Tuple{Makie.FigureAxisPlot}; options::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
   @ FileIO ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:226
 [4] action
   @ ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:197 [inlined]
 [5] action(call::Symbol, libraries::Vector{Union{Base.PkgId, Module}}, sym::Symbol, file::String, args::Tuple{Makie.FigureAxisPlot}; options::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
   @ FileIO ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:185
 [6] action
   @ ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:185 [inlined]
 [7] #save#20
   @ ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:129 [inlined]
 [8] save(file::String, args::Tuple{Makie.FigureAxisPlot})
   @ FileIO ~/.julia/packages/FileIO/JA3Vl/src/loadsave.jl:126
 [9] top-level scope
   @ REPL[23]:1

As you can see, save("test.png", fig) works correctly (so in particular, no additional packages need to be installed to save a PNG). However, if you get the second argument wrong (here I pass a tuple containing the figure instead of the figure), the error seems to suggest installing other packages, etc.

I think the right information is there (there's some MethodErrors and Argument does not support conversion to png) but there's also a bunch of what feels to be misleading information, e.g.

ArgumentError: Package QuartzImageIO [dca85d43-d64c-5e67-8c65-017450d5d020] is required but does not seem to be installed:
 - Run `Pkg.instantiate()` to install all recorded dependencies.

seems to be telling me to run Pkg.instantiate() to try to fix the problem, or maybe add QuartzImageIO.

ericphanson avatar Jul 16 '21 12:07 ericphanson