Hello Jim,
As mentioned in the MATLAB documentation Stop Execution - MATLAB & Simulink (mathworks.com), Ctrl+C might not always effectively stop execution for scripts or functions that run for an extended duration or that call built-ins or MEX-files. This is due to the potential risk of leaving MATLAB in an inconsistent state or not properly releasing native resources, like memory, which are shared with MEX files within the same memory space as MATLAB.
To mitigate this issue and enhance the interruptibility of your MATLAB scripts or functions, it is recommended to incorporate a "drawnow", "pause", or "getframe" function within your file, especially if it contains large loops. These functions can provide MATLAB with the opportunity to process the interrupt request more effectively.
To know more about "drawnow", "pause" and "getframe" functions, please refer to the links given below:
Hope this helps.
