Plotting with BigFloats #176

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1. Datseris commented on Nov 5, 2018

   

   Datseris

   on Nov 5, 2018

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   It is always helpful to post the code that lead to this issue, and maybe even the error message :)
2. Datseris commented on Nov 5, 2018

   

   Datseris

   on Nov 5, 2018

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   plot(big.(rand(10))) works in PyPlot, so I don't see a reason that plotting shouldn't work. I'll look at this more once you've pasted the code that lead to the issue.
3. yakir12 commented on Nov 6, 2018

   

   yakir12

   on Nov 6, 2018

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   Oh, sorry, I assumed this was a known problem. Here is the code:

   julia> using DynamicalBilliards
   
   julia> using PyPlot
   WARNING: using PyPlot.axes in module Main conflicts with an existing identifier.
   
   julia> bd = billiard_rectangle(BigFloat(2),BigFloat(2))
   Billiard{BigFloat} with 4 obstacles:
     Bottom wall
     Right wall
     Top wall
     Left wall
   
   julia> plot(bd)
   ERROR: PyError ($(Expr(:escape, :(ccall(#= /home/yakir/.julia/packages/PyCall/0jMpb/src/pyfncall.jl:44 =# @pysym(:PyObject_Call), PyPtr, (PyPtr, PyPtr, PyPtr), o, pyargsptr, kw))))) <class 'TypeError'>
   TypeError("ufunc 'isfinite' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ''safe''",)
     File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 1605, in xlim
       ret = ax.set_xlim(*args, **kwargs)
     File "/usr/lib/python3/dist-packages/matplotlib/axes/_base.py", line 2904, in set_xlim
       left, right = mtransforms.nonsingular(left, right, increasing=False)
     File "/usr/lib/python3/dist-packages/matplotlib/transforms.py", line 2773, in nonsingular
       if (not np.isfinite(vmin)) or (not np.isfinite(vmax)):
   
   Stacktrace:
    [1] pyerr_check at /home/yakir/.julia/packages/PyCall/0jMpb/src/exception.jl:60 [inlined]
    [2] pyerr_check at /home/yakir/.julia/packages/PyCall/0jMpb/src/exception.jl:64 [inlined]
    [3] macro expansion at /home/yakir/.julia/packages/PyCall/0jMpb/src/exception.jl:84 [inlined]
    [4] __pycall!(::PyCall.PyObject, ::Ptr{PyCall.PyObject_struct}, ::PyCall.PyObject, ::Ptr{Nothing}) at /home/yakir/.julia/packages/PyCall/0jMpb/src/pyfncall.jl:44
    [5] _pycall!(::PyCall.PyObject, ::PyCall.PyObject, ::Tuple{BigFloat,BigFloat}, ::Int64, ::Ptr{Nothing}) at /home/yakir/.julia/packages/PyCall/0jMpb/src/pyfncall.jl:22
    [6] _pycall!(::PyCall.PyObject, ::PyCall.PyObject, ::Tuple{BigFloat,BigFloat}, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at /home/yakir/.julia/packages/PyCall/0jMpb/src/pyfncall.jl:11
    [7] #pycall#88(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::PyCall.PyObject, ::Type{PyCall.PyAny}, ::BigFloat, ::Vararg{BigFloat,N} where N) at /home/yakir/.julia/packages/PyCall/0jMpb/src/pyfncall.jl:86
    [8] pycall(::PyCall.PyObject, ::Type{PyCall.PyAny}, ::BigFloat, ::Vararg{BigFloat,N} where N) at /home/yakir/.julia/packages/PyCall/0jMpb/src/pyfncall.jl:86
    [9] #xlim#137(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::BigFloat, ::Vararg{BigFloat,N} where N) at /home/yakir/.julia/packages/PyPlot/fZuOQ/src/PyPlot.jl:179                                                                                
    [10] xlim at /home/yakir/.julia/packages/PyPlot/fZuOQ/src/PyPlot.jl:176 [inlined]
    [11] #plot#85(::PyCall.PyObject, ::Function, ::Billiard{BigFloat,4,NTuple{4,InfiniteWall{BigFloat}},Nothing}) at /home/yakir/.julia/packages/DynamicalBilliards/pQCBP/src/plotting/billiards.jl:46
    [12] plot(::Billiard{BigFloat,4,NTuple{4,InfiniteWall{BigFloat}},Nothing}) at /home/yakir/.julia/packages/DynamicalBilliards/pQCBP/src/plotting/billiards.jl:39
    [13] top-level scope at none:0
4. Datseris commented on Nov 8, 2018

   

   Datseris

   on Nov 8, 2018

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   So since we will be almost certainly porting plotting of this package to Makie I won't be spending time solving this. But I'll keep it open for reference, to be sure that this is tested when we go to makie!
5. asinghvi17 commented on Aug 2, 2019

   

   asinghvi17

   on Aug 2, 2019

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   Makie converts internally to Float32, so BigFloats won't be as useful there. Still, it is possible.