plot custom cubes inside a sphere

Hello everyone,

I want to fill a sphere with custom cubes, like this:

This is a 2D illustration, however i want to plot it 3D and after that, consider a specific color for each cube.

Thanks in advance,

A.

Answer 1

[Mann Baidi]

Hi Ali,

As per my understading of the question,you would like to plot grid/cubes in a 3D sphere in MATLAB.

I would suggest you to use the 'surf' function in MATLAB for the same. You can change the dimensions of the cubes by specifying the number of faces of the sphere.

[X,Y,Z] = sphere(number_of_faces);

For coloring the cubes you can use the colormap function in MATLAB.

You can take help of the following code to proceed further.

[X,Y,Z] = sphere(50);
surf(X,Y,Z)
num_points = numel(Z);
cmap = cool(num_points); 
cmap(:,3)=(1:num_points)'/num_points;
hold on;
colorbar
colormap(cmap)

Feel free to explore more about the 'sphere', 'surf' and 'colormap' function using the documentation links mentioned below:

• Sphere: https://www.mathworks.com/help/matlab/ref/sphere.html
• Surf: https://www.mathworks.com/help/matlab/ref/surf.html
• Colormap: https://www.mathworks.com/help/matlab/ref/colormap.html

Hope this will help you with your query!