pliz help me to run a for loop for a specific run time for each iteration

help me please and thanks in advance!!! here i want to make each 'r' a specific time value for operation so that after that time next iteration will start. help me please anyone. your urgent response will help me lots.

ex: for r=1:rmax

if (some condition)

for i= 1:1:n

(some function)

end

end

Answer 1

[Adam Danz]

In this example, your code is executed on each iteration and the while-loop waits for the remaining time to pass before entering the next iteration.

iterationTime = 2; %minimum number of seconds for each loop

for i = 1:10
    tic;                                %set clock
    fprintf('iteration %d\n', i)        % <-- your code goes here
    while toc < iterationTime           %wait for the remaining iteration time
        % do nothing                    %leave this empty
    end
end

An alternative solution is to use a timer function (see link).

[rem ng]

@adam thanks a load for your quick response. will reply you back after running it.

[rem ng]

@Adam Danz your code is not working when i applied to my code. I tried many times but still its not working. i will write again here what i actually want. In this Ex. i want all the functions under r loop to run for each r iteration (taken one at a time till rmax) with specific execution time not for the whole r loop run time. I mean say r=3, all operation under iteration r=3 should run for 0.5sec. please clearify and explain me if possible.

Ex:

rmax=1000
n=100
for r=0:1:rmax
    (some operation)
    for i=1:1:n
        (some operation)
        if (some condition)
        end
    end
end

[Adam Danz]

If all executions within the r-loop are taking more than 0.5 second, you'll have to speed up your code by making it more optimal (if at all possible). If all executions within the r-loop are faster than 0.5 sec, then you can use the tic/toc method in my example so that the loop waits for the remaining time before the next iteration. (I updated my example to fit your needs).

[rem ng]

@Adam thanks. I got it now.

[Saurabh Das]

@Adam Danz Thanks for very much for sharing this. It worked perfectly in my matlab script requirement.