t = linspace(0,10*pi,500);
x1 = cos(t);
y1 = sin(t);
z1 = 0.5*t;
x2 = 2*cos(2*t);
y2 = 2*sin(2*t);
z2 = z1;
h1 = animatedline('Color','b','Marker','o','LineStyle','none');
h2 = animatedline('Color','r','Marker','*','LineStyle','none');
axis([-2 2 -2 2 -1 20])
hold on
for n=1:length(t)
    addpoints(h1,x1(n),y1(n),z1(n));
    addpoints(h2,x2(n),y2(n),z2(n));
    drawnow;
end
hold off