Try this code snippet I have in my inventory as an example.
t = 0 ;
x = 0 ;
startSpot = 0;
interv = 1000 ; % considering 1000 samples
step = 0.1 ; % lowering step has a number of cycles and then acquire more data
while ( t <interv )
b = sin(t)+5;
x = [ x, b ];
plot(x) ;
if ((t/step)-500 < 0)
startSpot = 0;
else
startSpot = (t/step)-500;
end
axis([ startSpot, (t/step+50), 0 , 10 ]);
grid
t = t + step;
drawnow;
pause(0.01)
end
