How to generate a point cloud in 3D?

Illustration
Leo Müller - 2022-02-19T10:07:43+00:00
Question: How to generate a point cloud in 3D?

Hello dear community,   I would like to know if there is a fast way to create a cloud in 3D which consists of points. I would like to get something like this:   The points should be written into a simple matrix. Each row should represent one point. Thank you for your help!  

Related Questions

  • How do I get the fork points of a skeleton of an image?
  • How to obtain the three angles (xy, yz, xz planes) of one vector relative to other vector?
  • How to generate a point cloud in 3D?

    • Expert Answer

    Profile picture of Prashant Kumar Prashant Kumar answered . 2025-11-20

    This might be a good starting point:
     
     
    [x,y,z] = ndgrid(1:5:100,1:5:100,1:5:100);
scatter3(x(:),y(:),z(:),'.')

     

    point cloud in 3D

    The ndgrid function will return multiple arrays of the same shape with one of its inputs replicated along one dimension of each of its outputs.
     
    The syntax x(:) says to convert that 3D array into a vector.
     
    The scatter3 function takes 3 vectors and plots a marker at the location defined by each row of the three.
     
    The '.' argument to scatter3 tells it to draw a dot, rather than one of the bigger and more complex markers.


    Not satisfied with the answer ?? ASK NOW

    Get a Free Consultation or a Sample Assignment Review!

    Upload Assignment Talk to Expert