plot3 disappear points: graphics problems

Using Matlab 2017a accademic licence, I am plotting in 3 dimension, three dinstinct clouds of points using this order: the first cloud is the main set of number (blue). Then there is a sub-set of main (color green). Then there is another sub-set (black) which is a subset of 2th cloud (green). In the next image I show you what happen when I modify the view angle.

Here is the results when I save the image using "Edit"->"Copy Figure" (I think that there are problem with black dots in both graph since you can notice that there are only few):

Here is the results when I save the image using "File"->"Save as"->".jpg" (left correct, notice that in the right plot, the black dots deaspier):

Here is what I see from the Matlab figure using Snipping tool (left correct, notice that in the right plot, the black dots deaspier):

The figure is exactly the same.

How do I solve this problem?

[KSSV]

I don't think your points have disappeared....from this view angle, those points are visible and black dots are behind the green..? Isn't it?

[Alberto Mora]

The points have the same XYZ coordinates (are overlapped), so I should only see the last set of points (first the blacks, then the greens and then the blue ones). Instead this happens only for specific viewing angles.

Answer 1

[Alberto Mora]

At the end, I think that the best solution is use setdiff and plot the cloud, without overlap.