two animated lines simultaneously with different number of sample

good evening, I'm trying to animate two line simultaneously, but I cant. I attach one if the last script, I even tried with only one for and the hold on after thefirst animatedline but still nothing.. I hope some can help me. I attach the 4 vector. x is with y; x1 with y1.

h = animatedline;

h1=animatedline;

axis([0,12,0,1])

numpoints = 2000;

numpoints1 = 20000;

x1=len_x1;

y1=len_y1;

x = len_x;

y = len_y;

a = tic; % start timer

% c=tic;

for k = 1:numpoints

addpoints(h,x(k),y(k))

b = toc(a); % check timer

if b > (1/100)

drawnow % update screen every 1/100 seconds

a = tic; % reset timer after updating

end

end

hold on

for j = 1:numpoints1

addpoints(h1,x1(j),y1(j))

b = toc(a); % check timer

if b > (1/10)

drawnow % update screen every 1/100 seconds

a = tic; % reset timer after updating

end

end

drawnow % draw final frame

Answer 1

[Mathieu NOE]

hello

I am not sure to uderstand what kind of result you want to achieve , maybe this little demo can help you

clearvars
clc

figure
h1 = animatedline;
h1.Marker = '*';
h1.Color = [1 0.4 0];
h2 = animatedline;
h2.Marker = '+';
h2.Color = [0 1 0];

axis([0 2*pi -1.5 1.5])

% x, y data
n = 100;
x=linspace(0,2*pi,n);
y1 = sin(x);
y2 = cos(x); 

% main loop
for ci=1:n

        addpoints(h1,x(ci),y1(ci));
        addpoints(h2,x(ci),y2(ci));
        pause(0.01);
        drawnow
        
end
    

[alessandro mutasci]

yeah I know, it's a little difficult to explain.. the problem is that I have two different number of "ci".. let's say that for y1=sin(x1), x1=1:10

for y2=cos(x2), x2=1:100

I want them to be let's say "matched". I don't know if I was clear.

If you run my script you will see the first plot and after it is compleatly plotted it starts the other one.. but they have two different "length of x"

[Mathieu NOE]

hello

I ran your code and I can see your plotting two animated lines with very similar shape , but with different number of points (different delta x , 0.01 for first line and 0,001 for second line )

this is the same as my demo modified here below : one curve has 100 points and the first 10 points but they both describe the same sine wave

clearvars
clc

figure
h1 = animatedline;
h1.Marker = 'd';
h1.Color = [1 0.4 0];
h2 = animatedline;
h2.Marker = '*';
h2.Color = [0 1 0];

axis([0 2*pi -1.5 1.5])

% x1, y1 data
n1 = 10;
x1=linspace(0,2*pi,n1);
y1 = sin(x1);

% x2, y2 data : 10 times more samples vs x1,y1 data
k = 10;
n2 = k*n1;
x2=linspace(0,2*pi,n2);
y2 = sin(x2); 


% main loop
for ci=1:n2
        
        a = ceil(ci/k);
        addpoints(h1,x1(a),y1(a));
        addpoints(h2,x2(ci),y2(ci));
        pause(0.01);
        drawnow
        
end
    

[alessandro mutasci]

Thank you so much! this is what i tried to achieve. but right now I'm trying to "control the velocity" in which they are displayed. changing the pause value doesn't give anything, is there a better way?

I still thank you!!!

[Mathieu NOE]

hello

on my computer, matlab is not very fast... I can slow down the code , using pause(0.5) will be noticeable.

but pause(0.01); does not change anything as even without pause , the iteration is slower than 0.01 s

so it depends if you want to slow down or speed up your rendering. It may simply depends how fast matlab runs on your pc.

[Mathieu NOE]

Hi

problem solved ?

[alessandro mutasci]

yes! sorry I thought I answered you! thank you so much for your help!

[Mathieu NOE]

My pleasure !