Saving sequence of plots into animated AVI file

gistfile1.matlab

% ======================================
% File: ani2avi
% Date: 1.Nov.2012
% Purpose: Saving a sequence of plots into avi file
% 
% Author: Giorgi Maghlakelidze
% ======================================
clc; clear all; close all

% ===[ Example ] =======================
t = 0:1/30:2*pi;          % Time in seconds
sint = sin(t);            % Sine as a function of time
% ======================================

filename = 'movie.avi';             % Set movie filename
movie = avifile(filename,'FPS',30); % Create a avifile object called 'movie' with 30 fps

fig = figure;                       % Record the handle of figure
for i = 1:length(t)
    plot(t, sint);                  % Plot the general path
    hold on                         % Allow drawing of other objects
    plot(t(i), sint(i), 'or')       % Plot state of sin function at current time
    hold off                        % This means the next plot replace current one
    axis([t(1) t(end) -1 1]);       % Fix the boundaries of view, so that it doesn't change from graph to graph
    F = getframe(fig);              % Record current drawing, use 'getframe(gca)' to record only central area
    movie = addframe(movie,F);      % Add saved frame to the movie
end
movie = close(movie)                % Once all the frames are recorded, finalize the file and print info