repeated for-looping without telling matlab to repeat loop error

Here is my code:

for m = 1:num_spans

    h1 = plot(Repetitions{:,m}); % plot the rep
    repcycle = sprintf('Rep %d',m);
    title(repcycle) % put title on graph to show user the rep
    [x, y] = ginput(2);
    xlabel('Time (s)')
    ylabel('Amplitude (mV)')
    close figure 1
    choice = input('Do you want to keep these start/stop times? (1 = yes, 2 = no): ');
    while choice == 2
        h1 = plot(Repetitions{:,m});
        [x, y] = ginput(2);
        repcycle = sprintf('Rep %d',m);
        title(repcycle) % put title on graph to show user the rep
        choice = input('Do you want to keep these start/stop times? (1 = yes, 2 = no): ');
    end
    xpoints(:,m) = [x(1,1),x(2,1)];
end

for some reason when running this code, MATLAB continuously repeats this for-loop without any code telling it to repeat. Why is this happening and how can I make it stop?

[Image Analyst]

Which loop: the "for" or the "while"? And what is the value of num_spans? And, do you know how to step through your code using the debugger?

Answer 1

[Image Analyst]

Instead of input(), try this:

promptMessage = sprintf('Do you want to keep these start/stop times?');
titleBarCaption = 'Continue?';
button = questdlg(promptMessage, titleBarCaption, 'Yes', 'No', 'Yes');
if strcmpi(button, 'No')
  break;
end