Matlab command window is blocked / or busy when I plot an animation

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Karthuk
Karthuk 2013-6-18
评论： raym 2018-4-13
Hello, Was just wondering if Matlab supports the below ?
below is the small snippet (say), I plot a figure and try to acheive animation in a while(1) loop:
function Example()
x=-5:.2:5;
y=sin(x);
h=plot(x,y);
axis([-2*pi 2*pi -1 1])
axis square
grid off
set(h,'EraseMode','xor','MarkerSize',18)
while(1)
for t=2:.1:7
drawnow
y=sin(x)*exp(-t);
set(h,'YData',y)
pause(0.05)
end
end
So I' am able to achieve th animation but can I do that witout locking the command window ? I don't want to block the command window. Could some one help me out on this please ?

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回答（4 个）

Sean de Wolski
Sean de Wolski 2013-6-18
Use a timer.
doc timer
I've written quite a few answers that have examples in them if you search through Answers' history.
Karthuk
Karthuk 2013-6-18
Any help would be much appreciated.
Thanks
  1 个评论
Jan
Jan 2013-6-18
Please do not bump your question by posting a pseudo-answer. If the readers know an answer and find the time for typing it, they will do it voluntarily. But when the question appears on topmost position again, although there is no new information, the time for reading the question another time is wasted. Therefore I'd suggest to limit bumping for a time delay of 24, better 48 hours.

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Jan
Jan 2013-6-18
Matlab is a single threaded application (in theory). Using the TIMER Sean has suggested is a method to run a thread nearly in parallel. But the esiest way is to open another Matlab instance:
!matlab &
Chetan Aswathanarayana
Thanks Sean, Picked up something from this today.
@Karthuk: Maybe this might help and was what you were looking for:
function Example()
x=-5:.2:5;
y=sin(x);
h=plot(x,y);
axis([-2*pi 2*pi -1 1])
axis square
grid off
set(h,'EraseMode','xor','MarkerSize',18)
t = timer('ExecutionMode','fixedRate',... %# Fire at a fixed rate
'Period',0.25);
t.TimerFcn = {@Do_It,h,x};
start(t);
end
function Do_It(obj,event,h,x)
for t=2:.1:7
drawnow
y=sin(x)*exp(-t);
set(h,'YData',y)
pause(0.04)
end
end
  1 个评论
Sean de Wolski
Sean de Wolski 2013-6-19
I would lower the timer's period and then remove the for-loop from DO_it. You can calculat T based on the event's 'TasksExecuted' property.

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