Re: Octave-4.2.1 problem with "pause" command

[Ying-Foon Chow (FEG)]

Thank you for your help.

YF

On Sun, Jul 16, 2017 at 10:38 PM, Doug Stewart <address@hidden> wrote:

On Sun, Jul 16, 2017 at 10:00 AM, Ying-Foon Chow (FEG) <address@hidden> wrote:

Hi,

I am a new user using Octave 4.2.1 in Windows 7. Somehow the following program always hang my machine if I don't specify a time in the "pause" command:

t=linspace(-1,1,1024);
plot(t,exp(t)),grid
title('exponential function')
pause
t0=clock;t=0;
while t<20
    axis([0 0 1 1]+exp(-t/5)*[-1 1 -1 1])
    drawnow
    t=etime(clock,t0);
end

That is, I can't get the figure to "move" no matter what key I press. Thanks in advance for any advice that may be offered.

YF

this works nice for me in Ubuntu

tt=linspace(-1,1,1024);

plot(tt,exp(tt)),grid

title('exponential function')

hold on                              ## I added this

pause

t0=clock;t=0;

while t<20

    axis([0 0 1 1]+exp(-t/5)*[-1 1 -1 1])

    drawnow

    t=etime(clock,t0);

end

I get a nice zoom in at 0,0

That should say (0,1)

To make the pause release you must click in the command window of octave and then press enter.

--

DAS

If you don't want to use so much CPU time then try this

tt=linspace(-1,1,1024);

plot(tt,exp(tt)),grid

title('exponential function')

hold on                              ## I added this

pause

t0=clock;t=0;

while t<20

    axis([0 0 1 1]+exp(-t/5)*[-1 1 -1 1])

    drawnow

    pause(.1)    # add this to reduce CPU usage

    t=etime(clock,t0);

end

--

DAS