One option is to use a sort of ‘inverse square’ size dimension scaling function.
Example —
x = rand(1,10);
y = rand(1,10);
z = rand(1,10);
figure;
scatter3(x, y, z, 10./(x.^2 + y.^2), 'ko')
ax = gca;
ax.Projection = 'perspective';
This uses scatter3 because it offers a simple way to specify the marker sizes. (You could also include ‘z.^2’ in the scaling calculation, however I opted to use ‘x’ and ‘y’ only.)
Note that this only works for a fixed orientation with (0,0,1) the closest point. The marker sizes remain fixed, and do not scale appropriately as you rotate the axes. If your axes are different from the [0,1] range that rand provides, you willl also have to scale the distances appropriately.
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