The example Use a DataQueue Object and parfor to Update a Wait Bar in
will also show using a waitbar to display completion.
You could use a persistent variable (if you only want to see how many iterations are completed), which is what the above example uses
q = parallel.pool.DataQueue;
afterEach(q, @my_increment);
parfor i = 1:10
send(q, i);
end
function my_increment(~)
persistent a
if isempty(a)
a = 1;
else
a = a + 1;
end
fprintf('a: %d\n', a);
end
But there are two isues with this
- This assumes that the loop variable always starts at 1. I would suggest you have a separate counter that always starts at 1 so that you're not dependent on the loop variable, whch might start at (say) 5.
- Because a in my_increment is persistent, it's also persistent between runs. Therefore, if you run your code a second time, you'll start where you left off last time (i.e., at 10). You'll want to clear your function to reset your persistent variable (and assuming you didn't mlock your function ;) )
For multiple runs, you'll need to call your code as such
my_fcn
clear my_fcn
my_fcn
