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engGetVariable crashes after MATLAB has quit

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Szabolcs
Szabolcs 2013-2-11
评论： Samuel Gray 2022-3-10
When using the MATLAB Engine interface, if the MATLAB process quits, engGetVariable(ep, "name") simply crashes (at least on OS X it does).
What is the best way to deal with this problem?
The only solution I can see is to do
engEvalString(ep, "")
to test whether MATLAB is still running before each single engGetVariable(). Is there a better way? I wish engGetVariable were smart enough to handle this situation and just return NULL if MATLAB is not running.
  1 个评论
Samuel Gray
Samuel Gray 2022-3-10
you could run a test string against the Matlab workspace pointed to by the engine pointer
sprintf(tststr,"whos('myvar');\n") (or ~exists('myvar','var'))
engEvalStr(tststr...)
getBuffer (I forget the exact call)
get the console buffer string and see if it has the variable that you're looking to copy with GetVariable

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