Why does the marker size not change for multiple points plotted with SCATTER3 for MATLAB 7.1 SP3?

When I run the following example from the documentation for SCATTER3 in MATLAB 7.1 (R14SP3), I do not obtain differently sized markers.

[x,y,z] = sphere(16);

X = [x(:)*.5 x(:)*.75 x(:)];

Y = [y(:)*.5 y(:)*.75 y(:)];

Z = [z(:)*.5 z(:)*.75 z(:)];

S = repmat([1 .75 .5]*10,prod(size(x)),1);

C = repmat([1 2 3],prod(size(x)),1);

scatter3(X(:),Y(:),Z(:),S(:),C(:),'filled'), view(-60,60)

Answer 1

[MathWorks Support Team]

There could be a problem with the rendering.

To workaround this issue include the following line after the code:

set(gcf, 'Renderer', 'zbuffer');