clear;
clf;
n=500;
a=6*pi;
freq = 20;
delta = a/n;
b=n+1;
hold off;
numframes = floor(b/freq)+1
M = moviein(numframes);
for k =1:b
t(k)=delta*(k-1);
x(k)=sin(t(k))-2*cos(2*t(k));
end;
t=0:delta:a;
x=sin(t)-2*cos(2*t);
ybottom = min(x)
ytop = max(x);
xright = max(t);
xleft = min(t);
axis([xleft xright ybottom ytop])
grid on
ezplot('t','sin(t)-2*cos(2*t)',[0,6*pi]);hold on;
marker1 = line('color','g','Marker','.','markersize',40,'EraseMode','xor','xdata',t(1),'ydata',x(1));
graph1=line('color','r','Linestyle','-','erase','none','xdata',[],'ydata',[]);
j=0;
for k=1:b
X1(k)=t(k);
Y1(k)=x(k);
if(floor(k/freq)*freq == k)
set(graph1,'Xdata',[X1],'Ydata',[Y1]);
set(marker1,'XData',X1(k),'YData',Y1(k));
j=j+1
M(j)=getframe;
end;
end
set(graph1,'Xdata',[X1],'Ydata',[Y1]);
set(marker1,'XData',X1(b),'YData',Y1(b));
M(numframes)=getframe
movie(M,10);
numframes =
26
ybottom =
-2.0625
j =
1
j =
2
j =
3
j =
4
j =
5
j =
6
j =
7
j =
8
j =
9
j =
10
j =
11
j =
12
j =
13
j =
14
j =
15
j =
16
j =
17
j =
18
j =
19
j =
20
j =
21
j =
22
j =
23
j =
24
j =
25
M =
1x26 struct array with fields:
cdata
colormap
