how to make a loop stop in each interation and continue after pressing a key in matlab

To achieve this functionality, you can use the pause function inside your loop and the keyboard function to wait for user input. Here's an example:

main.m
for i = 1:10
   % your code here
   pause;
   disp('Press any key to continue');
   keyboard;
end
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In this example, the loop will pause at the end of each iteration, display a message, and wait for the user to press any key. Once a key is pressed, the loop will continue with the next iteration.