# How do I do multi animated lines in one axes?

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ren ren on 30 Aug 2016
Commented: Koen on 17 Nov 2020
I need to do two multi animated lines in one axes.Is there any solution to this problem? As picture shows： This picture use "plot" ,but It's slowly when close to the end. And the matlab give a suggestion :use animatline to instead the plot function.

Thorsten on 30 Aug 2016
Edited: Thorsten on 30 Aug 2016
Just create a second animatedline and use addpoints:
numpoints = 100000;
x = linspace(0,4*pi,numpoints);
y = sin(x);
y2 = cos(x);
figure
h = animatedline;
h2 = animatedline;
axis([0,4*pi,-1,1])
for k = 1:numpoints
drawnow update
end
Walter Roberson on 16 Aug 2020
saveas() or print()
Or getframe() and imwrite() the data part of it.
Koen on 17 Nov 2020
I want to add animatedlines programmatically rather than using h1, h2, h3... (number of lines depends on certain input arguments in code)
h(1:num_lines) = animatedline
creates an animatedline array. I'm trying to access these in a loop where data is updated by doing something like
for x = 1:10
for i = 1:num_lines
y = i*x;
end
end
Intuitively, I would expect this code to create straight lines with different slopes. However this does not seem to work this way: it creates a single line (instead of num_lines), concatenating values h(1:num_lines). Is it possible to use animatedline in a similar way; using indices to feed data?

Le Dung on 15 Dec 2017
Edited: Le Dung on 15 Dec 2017
I suggest to you another approach, i think it is familiar to anyone. You can use "hold on" after "figure" And, of course, at the moment, "update" in "drawnow is no need. I will use example that Thorsten is given. Of course, to reduce cost time, i use 1000 to replace for 100000.
numpoints = 1000;
x = linspace(0,4*pi,numpoints);
y = sin(x);
y2 = cos(x);
figure
hold on % To hold this figure.
h = animatedline;
h2 = animatedline;
axis([0,4*pi,-1,1])
for k = 1:numpoints
drawnow % "update" is no need for this case
end
srinivas REDDY on 16 Aug 2020
how to save above graph in gif format ?

vlad gnatenko on 23 Dec 2018
What if u need 2 lines in 2 Figures?