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sphere with center and radius

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GEORGIOS TSAKIRAKIS
GEORGIOS TSAKIRAKIS 2018-10-15
评论： DGM 2024-1-24
how to plot a sphere with center(6500000,6500000,6500000) and radius 650000

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Akira Agata
Akira Agata 2018-10-15
How about this?
[x,y,z] = sphere;
x = x*650000;
y = y*650000;
z = z*650000;
figure
surf(x+650000,y+650000,z+650000)

更多回答（2 个）

Image Analyst
Image Analyst 2018-10-15
Try this:
% Make unit sphere
[x,y,z] = sphere;
% Scale to desire radius.
radius = 650000;
x = x * radius;
y = y * radius;
z = z * radius;
% Translate sphere to new location.
offset = 6500000;
% Plot as surface.
surf(x+offset,y+offset,z+offset)
% Label axes.
xlabel('X', 'FontSize', 20);
ylabel('Y', 'FontSize', 20);
zlabel('Z', 'FontSize', 20);
axis equal;
  8 个评论
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Image Analyst
Image Analyst 2024-1-24
I don't know from that function, but you can of course easily generate your own coordinates on the shell of the sphere. For any given z value, it's simply a circle. See the FAQ:
https://matlab.fandom.com/wiki/FAQ#How_do_I_create_a_circle?
DGM
DGM 2024-1-24
See also:
https://www.mathworks.com/matlabcentral/answers/1653040-how-to-draw-a-ball-by-plot3#answer_899815
That is one way to use plot3() to draw a spherical shell. Once you have the x,y,z data, you can offset it to the desired center.
If it's not actually necessary to use plot3() specifically, or if the sphere needs to be drawn in some other manner, then you'll have to say.

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Ankita De
Ankita De 2022-7-11
can you please tell nearest neighbour and contact distance distribution using binomial point process

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