How can I change the color of tiles in a spherical graph?

Hello,

I need to change color of every tile, so the sphere is a heat map just like this image.

This is just image that we got from our teacher, but i have no clue how to make it.

Answer 1

[Adam Danz]

sphere

sphere
axis equal
colorbar

If you want to change the colors, you can plot the sphere using surf(X,Y,Z,C) where C controls color of each face.

Use the [X,Y,Z] = sphere syntax to return the x,y,z coordinates and then use h=surf(X,Y,Z) to produce the same sphere and return the surface handle. You can also control color by updating properties of the surface object h.

Answer 2

[daniel mitchell]

In S1 you can see the properties.

You can use the Cdata propery to change the color of each tile for example.

[X,Y,Z] = sphere;
figure
s1 = surf(X,Y,Z)

s1 = 
  Surface with properties:

       EdgeColor: [0 0 0]
       LineStyle: '-'
       FaceColor: 'flat'
    FaceLighting: 'flat'
       FaceAlpha: 1
           XData: [21×21 double]
           YData: [21×21 double]
           ZData: [21×21 double]
           CData: [21×21 double]

  Show all properties

colorbar;
axis equal

figure;
s2 = surf(X,Y,Z)

s2 = 
  Surface with properties:

       EdgeColor: [0 0 0]
       LineStyle: '-'
       FaceColor: 'flat'
    FaceLighting: 'flat'
       FaceAlpha: 1
           XData: [21×21 double]
           YData: [21×21 double]
           ZData: [21×21 double]
           CData: [21×21 double]

  Show all properties

s2.CData = zeros(21,21,3); 
s2.CData(12,3,:) = [1 0 0] % R G B

s2 = 
  Surface with properties:

       EdgeColor: [0 0 0]
       LineStyle: '-'
       FaceColor: 'flat'
    FaceLighting: 'flat'
       FaceAlpha: 1
           XData: [21×21 double]
           YData: [21×21 double]
           ZData: [21×21 double]
           CData: [21×21×3 double]

  Show all properties