Tic Toc callback problem

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chris
chris 2013-4-18
I have a callback function in my code. I have tried to time from outside the callback function to a point within the callback function using the tic toc function. But it doesn't bring in the tic time into the callback function. How can i do this . I have heard about a function called global can bring variables into a callback but i have not managed to get it done with tic toc? Thanks :)

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回答（2 个）

Image Analyst
Image Analyst 2013-4-18
Yes. Look at the documentation for tic. Anywhere in your m-file:
global tic;
tic1 = tic;
Then in your callback code
global tic1;
elapsedTime = toc(tic1);
You can have multiple "Tic"s running simultaneously.
per isakson
per isakson 2013-4-18
Your question is vague. Hint:
Somewhere
...
global et
...
'Callback', @the_callback_function
...
where
function the_callback_function( ... )
global et
tic
... some code
et = toc;
end
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chris
chris 2013-4-18
What i mean is tic is outside the callback function , then the toc part is within the callback . Is it possible to do this without affecting the accuracy? Thanks a lot .

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