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

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Vítek on 29 Mar 2023
Edited: daniel mitchell on 29 Mar 2023
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.

Adam Danz on 29 Mar 2023
Edited: Adam Danz on 29 Mar 2023
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.

daniel mitchell on 29 Mar 2023
Edited: daniel mitchell on 29 Mar 2023
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

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