how to generate random point inside a sphere
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I am trying to generate random points inside a sphere given the radius and the center. If anyone has a sample code or can help me with this, thanks for the help.
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Torsten
le 24 Juil 2019
Modifié(e) : Torsten
le 24 Juil 2019
R = 3; % radius of the sphere
Xc = 4;
Yc = -4;
Zc = pi; % (Xc,Yc,Zc) center of the sphere
rval = 2*rand(1)-1;
elevation = asin(rval);
azimuth = 2*pi*rand(1);
radius = R*(rand(1))^(1/3);
[x,y,z] = sph2cart(azimuth,elevation,radius);
x=x+Xc
y=y+Yc
z=z+Zc
Plus de réponses (2)
Najwa Yaminah
le 17 Jan 2020
Modifié(e) : Ashish
le 13 Mai 2020
I have an assignment so I try the following code :
function getPoint() {
var d, x, y, z;
do {
x = Math.random() * 2.0 - 1.0;
y = Math.random() * 2.0 - 1.0;
z = Math.random() * 2.0 - 1.0;
d = x*x + y*y + z*z;
} while(d > 1.0);
return {x: x, y: y, z: z};
}
This works well as you can see
1 commentaire
John D'Errico
le 28 Jan 2020
Sigh. Of course, you posted this answer as Python code, when MATLAB code was needed.
Patricia Sperry
le 21 Sep 2019
Modifié(e) : Ashish
le 13 Mai 2020
Floow this method for generating the random points on sphere. I have also used this method for doing my work for the project.
Do try this code:
TH = 2*pi*rand(1,1e4);
PH = asin(-1+2*rand(1,1e4));
[X,Y,Z] = sph2cart(TH,PH,1);
plot3(X,Y,Z,'.','markersize',1)
axis equal vis3d
2 commentaires
darova
le 21 Sep 2019
I like how it looks like but all points are on sphere surface (not inside)
I think random radius should be added
DGM
le 23 Fév 2024
Considering that I just deleted 8 other junk answers used for spam links, something tells me that these answers were also spam but have since had their links removed. That might explain why they're not relevant to the question.
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