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Matlab: figureをビデオに書き込む

Last updated at Posted at 2015-05-31

プロットをビデオファイルに書き込んでいく方法.
VideoWriterクラスオブジェクトを作成して, open, writeVideo, closeメソッドで書き込む.

ビデオファイル形式 > doc VideoWriter
書き込めるオブジェクト形式 > doc writeVideo
レンダリングは'opengl'がデフォルト(doc Figureのプロパティ > Renderer)

figure_to_video
x = 0:100;
y = sin(x);

writerObj = VideoWriter('test.avi');
open(writerObj);

fig = plot(x,y);
set(fig, 'XDataSource', 'x');
set(fig, 'YDataSource', 'y');
set(gca, 'Xlim', [0 100], 'Ylim', [-20 20]);
set(gca,'nextplot','replacechildren');

for k = 0:20
    y = k*sin(x);
    refreshdata(fig);
    
    frame = getframe(gcf);
    writeVideo(writerObj, frame);
end

close(writerObj);

イメージとしての保存
http://qiita.com/jellied_unagi/items/7f2f7529bafcbcd5f5d3

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