Can I see values of variables while a code is running.

MATLAB on my PC is running a code that takes a very long time with a huge iteration.

I haven't put any disp, fprintf, etc in the code. Thus, I can't see how many iterations are done.

In this situation, can I access to the variables without halting the code ?

Answer 1

[Walter Roberson]

If you have code that is already running, and it is not already displaying the values, then there is no way to turn on displaying the values -- not without interrupting the run.

[Peter Marko]

False - see other answers

[Jim Riggs]

Be kind. The answer was True five years ago when it was posted.

Answer 2

[Azzi Abdelmalek]

You can use display function

a=10
display(a)

But this will make your code slower

Answer 3

[Peter Marko]

See https://www.mathworks.com/matlabcentral/answers/228916-tracking-the-value-of-a-variable-in-debug-mode#answer_185281 (use variable name on a separate line)

You can also use disp(x): https://www.mathworks.com/help/matlab/ref/disp.html

Answer 4

[Steven Lord]

As of release R2016a the Editor has a Pause button that will pause execution at the next executable line.