matlab app numeric box wont update real time

So i built a small app and for the sake of the example

I have a for loop in it that runs k times

inside of the for loop i have the index pointed to a numeric field in the app

Aka i want it to print out what index its at.

It will not update real time. It will only update it onces the loop is funished despite the call to transfer the index into the box.Value property is inside the loop.

What is up with this?

Answer 1

[Mohammad Sami]

include the drawnow command in your loop to force an update to the UI.

https://www.mathworks.com/help/matlab/ref/drawnow.html

[Robert Scott]

Thanks that worked but wow

That just killed my loops speed

more then 10ms more per iterations

I wont be able to use that. That is really really really bad.

Why cant matlab make anything that is actually fast?