how could i animate a series as an animation ?

a function like :

just with loop

Answer 1

[Adam Danz]

Here's a demo below. First create the data, set up the figure, then loop through each coordinate to plot the next line segment (or dot); use drawnow to update the plot on each iteration.

Run this demo to watch the sin wave form.

% Create your data
x = 0:.1:4*pi; 
y = sin(x); 

% Create figure
figure
ah = axes;

% Set axis limits so they aren't continually adjusted
ylim([-1,1])               
xlim([0, 4*pi])
hold(ah, 'on') %Hold the axis!

% loop through each point / line segment
for i = 2:numel(x)
    plot(x(i-1:i), y(i-1:i), '-b')
    drawnow %Update the plot!
end

Update: Here are better demos and more options I added 2 years later

https://www.mathworks.com/matlabcentral/answers/502437-how-do-i-show-a-line-being-created-like-an-animation-between-two-points-inside-a-plot#answer_412497