How to run and pause script from ui button

I want to have a ui button that will start and pause a simulation. The script I want to run is a for loop simulation, say the script name is simulation.m.

I set the push button as follows.

start.button = uicontrol('Style','pushbutton','units','normalized',...
                     'String','Start','Position',[0.1,0.93,0.1,0.05], ...
                     'Callback',@start_call);

function [] = start_call()
    simulation.m;

I can't figure out what to write in the callback function (either for running the script or for pausing it

Answer 1

[Stephen23]

Try downloading my FEX submission and running the file "cubehelix_view":

http://www.mathworks.com/matlabcentral/fileexchange/43700-cubehelix-colormaps--beautiful--distinct--versatile-

This function creates a figure containing several axes, sliders and buttons. The button labeled "Demo" will turn on and off a looped demonstration mode. You can have a look at the code to see how it works, but the basic idea is to check the button's values on each loop iteration:

% Check if the toggle button is down:
while ishghandle(tgh)&&get(tgh,'Value')
    %  do stuff here
end