MATLAB.jl function but not Plotting.

[ColtonKawamura]

On MacOS 15.3.1, using Julia Version: Version 1.11.5 (2025-04-14) with a recent build of MATLAB.jl and a trial version of MATLAB which is R2024b:

julia> using MATLAB

julia> mat"2+2"
WARNING: package sun.awt.X11 not in java.desktop
WARNING: package sun.awt.X11 not in java.desktop
4.0

which works fine. But when I try to bring up a figure:

julia> mat"figure"

julia> 

I get no figure piping up like I do on my work computer. The only difference between the two is that I'm using 2024a on the computer that works with my work license which I cannot share the license with my personal computer which is running 2024b (trial).

I assume the issue is because it's either trial or 2024b but open to suggestions.

[tqml]

Hey @ColtonKawamura

Just to make sure: Plotting from MATLAB.jl works on your Work PC?

Could you try starting a new session as described in #240 (comment) ?
Does plotting work then?

[ColtonKawamura]

@tqml Thanks so much for your reply! It does function as desired on my work Mac.

I tried the new session method without success:

julia> mat"2+2"
4.0

julia> mat"figure"

julia> new_session_flags = ""
""

julia> new_session = session = MATLAB.MSession(MATLAB.default_output_buffer_size; flags=new_session_flags)
WARNING: package sun.awt.X11 not in java.desktop
WARNING: package sun.awt.X11 not in java.desktop
MSession(Ptr{Nothing} @0x000000030300f590, UInt8[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00  …  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], Ptr{UInt8} @0x0000000158008000)

julia> MATLAB.close_default_session()
ERROR: UndefVarError: `close_default_session` not defined in `MATLAB`
Suggestion: check for spelling errors or missing imports.
Stacktrace:
 [1] getproperty(x::Module, f::Symbol)
   @ Base ./Base.jl:42
 [2] top-level scope
   @ REPL[12]:1

julia> MATLAB.default_session_ref[] = new_session
ERROR: UndefVarError: `default_session_ref` not defined in `MATLAB`
Suggestion: check for spelling errors or missing imports.
Stacktrace:
 [1] getproperty(x::Module, f::Symbol)
   @ Base ./Base.jl:42
 [2] top-level scope
   @ REPL[13]:1

julia> mat"2+2"
4.0

julia> mat"figure"

julia> 

[tqml]

My fault, I had a typo in my original snippet:
its close_default_msession and not close_default_session as well as default_msession_ref instead of default_session_ref.

Nevertheless, I tested it and my proposed workaround does not work with the latest release.
I will make some adjustments and merge #240 this week so that plotting is possible again.

[ColtonKawamura]

Ok thank you very much!