what's the time of pause(1)

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Eman Ahmed Elsayed
is this time equal 1 s??

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回答（2 个）

Paulo Silva
Paulo Silva 2011-6-8
pause(n) pauses execution for n seconds before continuing, where n can be any nonnegative real number. The resolution of the clock is platform specific. A fractional pause of 0.01 seconds should be supported on most platforms. Pausing must be enabled for this to take effect.
Reference
Matt Fig
Matt Fig 2011-6-8
Try this:
tic,pause(1),toc
The elapsed time should be slightly over 1 second, due to calling the pause function and other overhead.
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Matt Fig
Matt Fig 2011-6-9
Built-in functions don't show in the profiler... at least in 2007b.
Also, I have noticed that the profiler total time run per function, or even per line of code is completely useless. For example, when looking at the profile of running an M-file which I know took less than 2 seconds to run, I see it saying things like REPMAT took 3.5 seconds alone, and meshgrid took 2.8 seconds - rubbish!
I only look at the relative times run to get useful information.
Paulo Silva
Paulo Silva 2011-6-9
I'm with the version 2008b and I can profile just the pause(1), it takes an average of 1.009 seconds, I'm also a fan of the tic and toc functions instead of the profiler

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