How to Put Dots on Sphere Mesh Node Points?

Question

ercan duzgun 2021-2-3

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https://ww2.mathworks.cn/matlabcentral/answers/735077-how-to-put-dots-on-sphere-mesh-node-points

评论： Star Strider 2021-2-4

I found those codes for drawing a sphere. I can get the x,y,z coordinates.

I would like to use those x,y,z coordinates. But I don't want to color the sphere by using the surf command. In state, I want it to leave the sphere blank by only with the mesh lines. Then I want to plot a single point on each mesh nodes according to radius. There would be dots on each mesh nodes. And the radius of the dots would be varying by z coordinates. For example, for the downside, the dots would be small, on the upside the dots would be bigger.

[x,y,z] = sphere;      %# Makes a 21-by-21 point sphere
x = x(11:end,:);       %# Keep top 11 x points
y = y(11:end,:);       %# Keep top 11 y points
z = z(11:end,:);       %# Keep top 11 z points
r = 1;                 %# A radius value
surf(r.*x,r.*y,r.*z);  %# Plot the surface
axis equal;            %# Make the scaling on the x, y, and z axes equal

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Answer 1

Star Strider 2021-2-3

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/735077-how-to-put-dots-on-sphere-mesh-node-points#answer_613847

编辑：Star Strider 2021-2-3

在 MATLAB Online 中打开

Try this (replacing the surf call):

figure
scatter3(r.*x(:),r.*y(:),r.*z(:), 0.001+z(:)*100, 'o', 'filled');  %# Plot the surface
axis equal;            %# Make the scaling on the x, y, and z axes equal

EDIT — (3 Feb 2021 at 15:29)

Added plot figure:

.

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ercan duzgun 2021-2-4

Dear @Star Strider, than you again for your help. I have another question now. I want to add grids on that plot. I asked that question on a seperated question here (https://www.mathworks.com/matlabcentral/answers/736012-how-to-plot-grid-on-a-scatter-plot), if you could answer it too? Thanks.