MATLAB movie2avi cannot made video

I am trying to test the function movie2avi using simple codes in R2014a as follows:

    clear; close all;
    figure;
    Z = peaks;
    surf(Z);
    axis tight manual;
    ax = gca;
    ax.NextPlot = 'replaceChildren';

    loops = 40;
    F(loops) = struct('cdata',[],'colormap',[]);
    for j = 1:loops
        X = sin(j*pi/10)*Z;
        surf(X,Z);
        drawnow;
        F(j) = getframe(gcf);
    end

    movie(F);

    movie2avi(F, 'myPeaks.avi', 'compression', 'None');

It seems the movie(F) works well but the avi file created contains the toolbar and background instead of just showing the graph. Also the avi file just show stationary picture as follow:

https://www.dropbox.com/s/otgnhc9ucfehqwk/a.png?dl=0

Another version of the program produce the same result: clc;clear; close all;

figure;

Z = peaks;

surf(Z);

axis tight manual;

ax = gca;

ax.NextPlot = 'replaceChildren';

v = VideoWriter('newfile2.avi','Uncompressed AVI');

open(v);

loops = 40;

F(loops) = struct('cdata',[],'colormap',[]);

for j = 1:loops

    X = sin(j*pi/10)*Z;

    surf(X,Z);

    drawnow;

    F = getframe(gcf);

    writeVideo(v,F);

end

close(v);

There is also a warning:

Warning: Struct field assignment overwrites a value with class "double". See MATLAB R14SP2 Release Notes, Assigning Nonstructure Variables As Structures Displays Warning, for details.

Please help. Thanks.

Answer 1

[Kelvin]

I added a command "set(gcf,'Renderer','zbuffer');" when I use R2014a and the problem is solved. It is just like using writeVideo in R2015a without that command. Thank you.

Answer 2

[Walter Roberson]

gcf is Get Current Figure. You are asking for the entire figure to be recorded, not just the plot, which would be gca

[Kelvin]

I have changed it to F(j) = getframe(gca); but it doesn't help.

[Kelvin]

I also tried writeVideo as updated above but failed.

[Kelvin]

Update: I added a command "set(gcf,'Renderer','zbuffer');" when I use R2014a and the problem is solved. It is just like using writeVideo in R2015a without that command. Thank you.