Animated GIF

How to generate an animated GIF from MATLAB

Description

This example animates the vibration of a membrane, captures a series of screen shots, and saves the animation as a GIF image file. The animated GIF is also embedded in an HTML page via the published M-File.

• Acknowledgements: This submission has inspired the following:; 3-D DataViz Contest Animation
• Required Products: Image Processing Toolbox
• MATLAB release: MATLAB 7.7 (R2008b)

[Anders Brun]

Nice example! You can add anti-aliasing too if you download the Myaa tool and replace every

    f = getframe;

with
    h = myaa;
    f = getframe;
    close(h);

Thanks,
Anders

[Robert Bemis]

Anders, interesting suggestion. Thanks!

[Luca Cerone]

That's almost what I was looking for..
I just wonder how can I display also xlabel, ylabel
and title, and the values on the axis.
Any Idea???
Thank you very much by the way :)

[Robert Bemis]

Luca, see the help for GETFRAME. The optional arguments are what you need. :)

[Geoffrey]

It would be nice if I could just feed an argument into a function, but the code is effective and easy to edit.

[Ged Ridgway]

Am I right in thinking that 'DelayTime',0 means that the speed of the animation is only limited by the viewer's hardware? (In other words, in a years to come, those peaks might be dancing too fast to see!)

Oddly, the documentation for imwrite doesn't say what the default is for this; looking at imagesci/private/writegif.m it appears that it's 0.5 seconds, which seems very long for most animations (as opposed to step-throughs of multiple plots). I would have thought that something like 1/24 (a common choice of frame-rate I believe) would be a reasonable choice. Though writegif rounds to the nearest 100th of a second, so this would actually be 0.04s. Anyway, just a thought.

[WtFudgE]

I am trying to do it with imagesc or imshow, however my gif file doesn't have all the colours in my image, I tried it with a 3D version of the shepp logan phantom, which odly has a minimum value of -5.551115123125783e-017 and a max of 1 and it's a double.
Is there perhaps some setting that could fix this? It plots fine... It just doesn't write all the colours entirely, only like one gray & black

[Joachim]

 

[Sherif]

Very good, thanks.