Do While Loops in Matlab

Question

I want to use a do while loop in Matlab:

I am currently using this code, but I don't think that I am doing it right:

flag2=true;

while (flag2)

    % (I write the program here)

    for abc = 1:3
        if abs(error(abc)) < errorTreshold
            flag2=false;
            break
        end
    end
end

what error do you get? there is at least one `end` missing at the end. — Robert Seifert, Dec 06 '13 at 18:40
the loop ends immediately...i think I have an error in the for loop :S — user3074215, Dec 06 '13 at 18:43
maybe the if-condition is always true and therefore it always aborts. Leave out the `flag2=false;break` and use `disp(abs(error(abc)) < errorTreshold)` to see whether that'S the reason — Robert Seifert, Dec 06 '13 at 18:46
Related and possibly duplicate: [Matlab - Is there a way to perform a do-while?](http://stackoverflow.com/questions/14920206/matlab-is-there-a-way-to-perform-a-do-while) — horchler, Dec 06 '13 at 19:14

score 0 · Answer 1 · answered Dec 06 '13 at 18:46

0

You must do:

if abs(error(abc)) > errorTreshold

instead of "<"

or see if you can do (removing the 'if'):

while abs(error(abc))>errorTreshold

answered Dec 06 '13 at 18:46

George

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is there maybe a method like in java to use do something while condition...as i want the program to at least do something once...and like that i would eliminate the flag – user3074215 Dec 06 '13 at 18:58
@user3074215:As far as I know there isn't.The use of flags as you wrote is the appropriate method.If you check it you can see that the first condition is always executed (under 'while').Your error was just the ">" symbol. – George Dec 06 '13 at 19:10

Do While Loops in Matlab

1 Answers1