Matlab Movie

plot(ws(1,:),y,'r-+');
fig1 = gcf;
set(fig1, 'NextPlot','replacechildren');
winsize = get(fig1,'Position');
set(gca, 'XLim',[0 20],'YLim',[0 150]);
lim = gca;

for i = 1:noframes
plot(ws(i,:),y,'r-+');
axes = lim;
drawnow;
a(:,i) = getframe;
end

I am trying to visualize some data with time and need to make a movie with it, I researched a little and got to a point where i can genrate a movie but the axes in the movie keeps changing. And it makes no sense if i can't fix the axes and tried to do that with no avail, can anyone of you gurus look at this and give me some insights, into this.

Essentially i have vector ws at various time stamps in a variable and have a another vector which which is constant, so the y axis remains constant because i am always plotting ws against the same y but the x axis on which i plot ws keeps changing and i need to stop that.

thanks nk

Answer 1

[Fangjun Jiang]

axis([Xmin Xmax Ymin Ymax]);

[Nikhil]

tried that in the for loop it says that

??? Subscript indices must either be real positive integers or logicals.

Answer 2

[Nikhil]

sorry man i guess i was using axis as a variable for something, i guess i didn't realize that, thanks a bunch though

[Fangjun Jiang]

You have this line: axes=lim. Notice that axes is a built-in function.

Answer 3

[Image Analyst]

Every time you plot, it blows away prior settings. So you need to determine your limits in advance and then after you call plot() with your new data (in your loop), issue calls to xlim() and ylim() to change the limits to your predetermined standard limits.

[Nikhil]

can you tell me a way to save xlim and ylim in a variable? i mean i get what you are saying but can't just implement it, i got it working now after changing the "axis" jiang was pointing out but i am still hard coding the limits.

[Fangjun Jiang]

AxisLimit=axis(gca);

axis(AxisLimit+10);

The same applies to xlim(),ylim() and zlim()