engSetVisible when starting Matlab Engine from Python

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EK
EK 2015 年 5 月 31 日
コメント済み: EK 2015 年 6 月 7 日
Hello, when starting Matlab Engine from C++ it was possible to have the engine window visible, and keep it open even after the code was finished, so easy debugging of the workspace content of the engine session was possible. When starting the matlab engine from python, the engSetVisible command does not work and a startup option ("-visible") is not understood. Is there a solution to this? I am aware that a possible workaround is to save the workspace at the end of the script and then reload it. Just this is less convenient than having the workspace open and accessible straight away. Thanks a lot

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Robert Snoeberger
Robert Snoeberger 2015 年 5 月 31 日
According to the documentation, you can start matlab with the "-desktop" startup option. See the "Start Engine with Startup Options" subsection of the documentation for more information.
Please note that startup options were added in R2015a. See "MATLAB Engine for Python: Support for startup options" in the R2015a release notes .
  4 件のコメント
Bo Li
Bo Li 2015 年 6 月 1 日
Assume the M file "foo.m" is located in folder "C:\tmp", this is one approach that I would try:
>>>eng=matlab.engine.start_matlab("-desktop")
>>>eng.cd(r'C:\tmp') #change to the folder with file "foo.m"
>>>eng.eval("dbstop in foo.m at 2", nargout=0) #set breakpoint
>>>eng.foo() #call the M function, which will pause at line 2
After that, you can check the variables in the workspace of MATLAB.
EK
EK 2015 年 6 月 7 日
Thank you Robert and Bo: The dbstop is a helpful command. Still, here, the script would not stop at the desired point. What I'm doing now is to pause the python script: #import time
time.sleep(1)
In this way, I can inspect the contents of the matlab engine session and it will not be closed automatically

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