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[BUG] can't plot with default colour scale with high precision floats #4270

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dahtah opened this issue Jul 11, 2022 · 5 comments · Fixed by JuliaPlots/PlotUtils.jl#145
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[BUG] can't plot with default colour scale with high precision floats #4270

dahtah opened this issue Jul 11, 2022 · 5 comments · Fixed by JuliaPlots/PlotUtils.jl#145
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@dahtah
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dahtah commented Jul 11, 2022 •
edited by t-bltg
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There's an issue with the limits of the default colour scale when plotting with high precision floats (e.g. BigFloats).

Details

When plotting data that isn't Float64s but higher precision floats (like BigFloats, or ArbFloats from the ArbNumerics package), the following issue sometimes appears:

a=-exp(-BigFloat(8))
b=BigFloat(1)
heatmap([a b; b a]) 
#fails with
#ERROR: BoundsError: attempt to access 256-element Vector{Float64} at index [257]

Backends

Presumably all backends, this bug originates in colorschemes.jl

Versions

Plots.jl version: 1.31.1
Backend version (]st -m <backend(s)>): irrelevant
Output of versioninfo():
Julia Version 1.7.3
Commit 742b9abb4d (2022-05-06 12:58 UTC)
Platform Info:
OS: Linux (x86_64-pc-linux-gnu)
CPU: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-12.0.1 (ORCJIT, skylake)
Environment:
JULIA_ERROR_COLOR = magenta
JULIA_EDITOR = emacsclient
@dahtah dahtah added the bug label Jul 11, 2022
@t-bltg
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t-bltg commented Jul 12, 2022 •
edited
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this bug originates in colorschemes.jl

If that is the case (it would be better to provide the full stacktrace), the bug should be reported to ColorSchemes.jl.

@nilshg
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nilshg commented Jan 26, 2023 •
edited by t-bltg
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I think OP meant the files colorschemes.jl in PlotUtils - just had a user on Discourse run into this, here's the stacktrace:

julia> heatmap(rand(BigFloat, 200, 200))
Error showing value of type Plots.Plot{Plots.GRBackend}:
ERROR: BoundsError: attempt to access 256-element Vector{Float64} at index [257]
Stacktrace:
  [1] getindex
    @ .\essentials.jl:13 [inlined]
  [2] get(cg::PlotUtils.ContinuousColorGradient, x::BigFloat, rangescale::Tuple{Float64, Float64})
    @ PlotUtils C:\Users\ngudat\.julia\packages\PlotUtils\M092a\src\colorschemes.jl:68
  [3] (::PlotUtils.var"#6#7"{PlotUtils.ContinuousColorGradient})(x::BigFloat)
    @ PlotUtils C:\Users\ngudat\.julia\packages\PlotUtils\M092a\src\colorschemes.jl:29
  [4] iterate
    @ .\generator.jl:47 [inlined]
  [5] collect_to!(dest::Matrix{RGBA{BigFloat}}, itr::Base.Generator{Matrix{BigFloat}, PlotUtils.var"#6#7"{PlotUtils.ContinuousColorGradient}}, offs::Int64, st::Int64)
    @ Base .\array.jl:840
  [6] collect_to_with_first!(dest::Matrix{RGBA{BigFloat}}, v1::RGBA{BigFloat}, itr::Base.Generator{Matrix{BigFloat}, PlotUtils.var"#6#7"{PlotUtils.ContinuousColorGradient}}, st::Int64)
    @ Base .\array.jl:818
  [7] _collect(c::Matrix{BigFloat}, itr::Base.Generator{Matrix{BigFloat}, PlotUtils.var"#6#7"{PlotUtils.ContinuousColorGradient}}, #unused#::Base.EltypeUnknown, isz::Base.HasShape{2})
    @ Base .\array.jl:812
  [8] collect_similar
    @ .\array.jl:711 [inlined]
  [9] map
    @ .\abstractarray.jl:3255 [inlined]
 [10] get(cg::PlotUtils.ContinuousColorGradient, v::Matrix{BigFloat}, rangescale::Tuple{Float64, Float64})
    @ PlotUtils C:\Users\ngudat\.julia\packages\PlotUtils\M092a\src\colorschemes.jl:29
 [11] gr_draw_heatmap(series::Plots.Series, x::Vector{Float64}, y::Vector{Float64}, z::Matrix{BigFloat}, clims::Tuple{Float64, Float64})
    @ Plots C:\Users\ngudat\.julia\packages\Plots\nuwp4\src\backends\gr.jl:1954
 [12] gr_add_series(sp::Plots.Subplot{Plots.GRBackend}, series::Plots.Series)
    @ Plots C:\Users\ngudat\.julia\packages\Plots\nuwp4\src\backends\gr.jl:1728
 [13] gr_display(sp::Plots.Subplot{Plots.GRBackend}, w::Measures.AbsoluteLength, h::Measures.AbsoluteLength, vp_canvas::Plots.GRViewport{Float64})
    @ Plots C:\Users\ngudat\.julia\packages\Plots\nuwp4\src\backends\gr.jl:956
 [14] (::Plots.var"#528#529"{Int64, Int64, Plots.GRViewport{Float64}})(sp::Plots.Subplot{Plots.GRBackend})
    @ Plots C:\Users\ngudat\.julia\packages\Plots\nuwp4\src\backends\gr.jl:680
 [15] foreach(f::Plots.var"#528#529"{Int64, Int64, Plots.GRViewport{Float64}}, itr::Vector{Plots.Subplot})
    @ Base .\abstractarray.jl:3067
 [16] gr_display(plt::Plots.Plot{Plots.GRBackend}, dpi_factor::Int64)
    @ Plots C:\Users\ngudat\.julia\packages\Plots\nuwp4\src\backends\gr.jl:680
 [17] gr_display
    @ C:\Users\ngudat\.julia\packages\Plots\nuwp4\src\backends\gr.jl:650 [inlined]
 [18] #574
    @ C:\Users\ngudat\.julia\packages\Plots\nuwp4\src\backends\gr.jl:2044 [inlined]
 [19] withenv(::Plots.var"#574#576"{Plots.Plot{Plots.GRBackend}}, ::Pair{String, String}, ::Vararg{Pair{String}})
    @ Base .\env.jl:197
 [20] _display(plt::Plots.Plot{Plots.GRBackend})
    @ Plots C:\Users\ngudat\.julia\packages\Plots\nuwp4\src\backends\gr.jl:2043
 [21] display(#unused#::Plots.PlotsDisplay, plt::Plots.Plot{Plots.GRBackend})
    @ Plots C:\Users\ngudat\.julia\packages\Plots\nuwp4\src\output.jl:174
 [22] display(x::Any)
    @ Base.Multimedia .\multimedia.jl:340
 [23] #invokelatest#2
    @ .\essentials.jl:816 [inlined]
 [24] invokelatest
    @ .\essentials.jl:813 [inlined]
 [25] print_response(errio::IO, response::Any, show_value::Bool, have_color::Bool, specialdisplay::Union{Nothing, AbstractDisplay})
    @ REPL C:\Users\ngudat\AppData\Local\Programs\Julia-1.9.0-beta3\share\julia\stdlib\v1.9\REPL\src\REPL.jl:302
 [26] (::REPL.var"#57#58"{REPL.LineEditREPL, Pair{Any, Bool}, Bool, Bool})(io::Any)
    @ REPL C:\Users\ngudat\AppData\Local\Programs\Julia-1.9.0-beta3\share\julia\stdlib\v1.9\REPL\src\REPL.jl:284
 [27] with_repl_linfo(f::Any, repl::REPL.LineEditREPL)
    @ REPL C:\Users\ngudat\AppData\Local\Programs\Julia-1.9.0-beta3\share\julia\stdlib\v1.9\REPL\src\REPL.jl:551
 [28] print_response(repl::REPL.AbstractREPL, response::Any, show_value::Bool, have_color::Bool)
    @ REPL C:\Users\ngudat\AppData\Local\Programs\Julia-1.9.0-beta3\share\julia\stdlib\v1.9\REPL\src\REPL.jl:282
 [29] (::REPL.var"#do_respond#80"{Bool, Bool, REPL.var"#93#103"{REPL.LineEditREPL, REPL.REPLHistoryProvider}, REPL.LineEditREPL, REPL.LineEdit.Prompt})(s::REPL.LineEdit.MIState, buf::Any, ok::Bool)
    @ REPL C:\Users\ngudat\AppData\Local\Programs\Julia-1.9.0-beta3\share\julia\stdlib\v1.9\REPL\src\REPL.jl:893
 [30] #invokelatest#2
    @ .\essentials.jl:816 [inlined]
 [31] invokelatest
    @ .\essentials.jl:813 [inlined]
 [32] run_interface(terminal::REPL.Terminals.TextTerminal, m::REPL.LineEdit.ModalInterface, s::REPL.LineEdit.MIState)
    @ REPL.LineEdit C:\Users\ngudat\AppData\Local\Programs\Julia-1.9.0-beta3\share\julia\stdlib\v1.9\REPL\src\LineEdit.jl:2644
 [33] run_frontend(repl::REPL.LineEditREPL, backend::REPL.REPLBackendRef)
    @ REPL C:\Users\ngudat\AppData\Local\Programs\Julia-1.9.0-beta3\share\julia\stdlib\v1.9\REPL\src\REPL.jl:1293
 [34] (::REPL.var"#62#68"{REPL.LineEditREPL, REPL.REPLBackendRef})()
    @ REPL .\task.jl:514

@t-bltg
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t-bltg commented Jan 26, 2023 •
edited
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@nilshg, your example doesn't error ?

Xref https://discourse.julialang.org/t/display-function-returning-boundserror/93548

@nilshg
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nilshg commented Jan 26, 2023

Hm, you're right - it only errors when one adds AssociatedLegendrePolynomials and SpecialFunctions to the environment - maybe that restricts some transitive dependency to an older version? Plots is at 1.38.2 in both cases.

@t-bltg
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t-bltg commented Jan 26, 2023 •
edited
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However OP's example errors on current PlotUtils and latest Plots.
Will try to fix.

@t-bltg t-bltg mentioned this issue Jan 26, 2023
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fix BigFloat oob t-bltg/PlotUtils.jl
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@dahtah @nilshg @t-bltg