How to close the extra legend added by comet fun?

I use the comet fun to trace my simdata, however the comet fun added the extra legend data to my fig, see the attached fig that "data1, data2, data3" were added when animating.

How should I close the extra "data1, data2, data3" at the beginning of the animation? BTW, I know how to close it when the animation is finished.

Answer 1

[KSSV]

x = 1:100 ;
y = rand(size(x)) ;

figure
h = plot(x,y) ;
hold on
comet(rand(size(x))) ;
legend(h,'one')

[ziyong han]

Thanks for your answer, however, it still can not solve my problem.

x = 1:100 ;
y = rand(size(x)) ;
figure
h = plot(x,y) ;
hold on
legend('rand');
comet(rand(size(x))) ;
legend(h,'one')

The above code still show the added extra "data1, data2, data3".

I want it close at the beginning of the animation.

[KSSV]

x1 = 1:100 ;
y1 = rand(size(x1)) ;
figure
h1 = plot(x1,y1) ;
hold on
y2 = rand(size(x1)) ;
h2 = plot(x1(1),y2(1)) ;
legend(h1,'one')
for i = 1:100
    set(h2,'XData',x1(1:i),'YData',y2(1:i))    
    drawnow
end

[ziyong han]

thanks, it do solve the problem.

But compare to comet, it is slower in my simulation data more than 10000.

Is there a good way to achieve this by comet?

[KSSV]

as of now to make the plot fast..you can run the loop by skipping some values...you need not to run for every point.