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arokem / python-matlab-bridge

A simple Python => MATLAB(R) interface and a matlab_magic for ipython
BSD 2-Clause "Simplified" License
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Could not find documentation on how to 'exit' MATLAB after load_ext pymatbridge #204

Open a59 opened 9 years ago

a59 commented 9 years ago

I was able to get

%load_ext pymatbridge

to work. But it returns

Starting MATLAB on ZMQ socket ipc:///tmp/pymatbridge-5bb9f445-7224-463d-8e98-b505faf751d3 Send 'exit' command to kill the server

Do I need to send an 'exit' command and if so, how do I do that?

I was unable to find instructions for this anywhere in the documentation.

brunobeltran commented 9 years ago

This might actually be a bug.

You should be able to execute arbitrary MATLAB code using the %matlab magic once the extension is loaded, meaning that using

%matlab exit

or 

%%matlab
exit

should work. However, currently, these commands both cause my iPython notebook to hang forever (>60s).

I assume this is because pymatbridge is waiting for a ZMQ response that never comes (by definition, since MATLAB has shut down?)

arokem commented 9 years ago

Sorry @a59 for slow response here. I am not sure I understand the problem. Were you able to use the pymatbridge after initializing it?

arokem commented 9 years ago

As for @brunobeltran - I think that this is just a confusion. There are actually two kinds of exit: one is the matlab function exit. The other is a message that can be sent to the ZMQ server:

https://github.com/arokem/python-matlab-bridge/blob/master/pymatbridge/messenger/src/messenger.c#L45

And would terminate the messenger. We might want to provide a more elegant message here, though.

brunobeltran commented 9 years ago

Yeah, you're right, I was simply confused before.

@a59 I think the short answer to your question is: to close Matlab when using the "magics" form of pymatbridge, simply unload the extension. Matlab will be closed automagically.