network profile
| bio | website | |
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| age | ||
| visits | member for | 2 years, 2 months |
| seen | Jan 6 at 22:15 | |
| stats | profile views | 30 |
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Dec 15 |
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How to test a reduced linear model passing through the origin? +1 Great. Please add some comments and explanation. Thank you. |
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Mar 9 |
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How to generate uniformly distributed points in the 3-d unit ball? @whuber: is the formula above correct? |
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Mar 8 |
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How to generate uniformly distributed points in the 3-d unit ball? @mbq: correction, I think the p.d.f is $f_{R, \Theta, \Phi}(r,\theta, \phi)=\frac{3}{4\pi}r^2sin\theta$ |
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Mar 8 |
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How to generate uniformly distributed points in the 3-d unit ball? @mbq, I think to define the term, we need to have a p.d.f. of $f_{R, \Theta, \Phi}(r,\theta, \phi)=r^2$. |
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Mar 8 |
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How to generate uniformly distributed points in the 3-d unit ball? @whuber: maybe I just did not get the essence of the previous techniques. Let me try what you described. Additionally, what are the ways to check the uniformity here again? |
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Mar 8 |
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Determining the nature of noise I like your answer very much. +1 |
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Mar 8 |
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How to generate uniformly distributed points on the surface of the 3-d unit sphere? I am just wondering if your method of generating points (x,y,z) is essentially the same as whuber's method? |
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Mar 8 |
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How to generate uniformly distributed points on the surface of the 3-d unit sphere? I bet it is mathematica... just tell from the color... :) |
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Mar 8 |
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How to generate uniformly distributed points on the surface of the 3-d unit sphere? @whuber: very nice! thanks a lot for your post! "$(X_1/\lambda, X_2/\lambda, X_3/\lambda)$ is uniformly distributed on the sphere." where can I find reference about its proof, or is it simply provable? |
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Mar 8 |
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How to generate uniformly distributed points on the surface of the 3-d unit sphere? is it possible to post the links where I can find the full text of these references? thanks. |
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Mar 7 |
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How to generate uniformly distributed points on the surface of the 3-d unit sphere? can any of these projections still preserve the uniformity of randomness? Again, how can I check whether the final distribution of these points are truly uniformly distributed on the surface of the sphere? Thanks. |
