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Re: the fastest way to find number of points in sphere(radius r) [message #46411 is a reply to message #46409]

Tue, 22 November 2005 05:14

snfinder@naver.com
Messages: 35
Registered: August 2005

Member

Thank you, Xavier Llobet~^^

Actually, I expect a vectorizing method. (finding number of points
about all centers at a time.)

By the way,
The points that I have are about 5*10^5.
The number of centers is about 3*10^6.
These are quite large.

Anyway, I can't understand your way exactly.
Can you explain it more ?

So sph(2,*) is the array of distances.
-> distances? Whose distances?
***I need a number of points. ***
Do I use a where function about every centers again?
I want to avoid loops if possible.

Help, again. ^^

^_^

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[Message index]

		Re: the fastest way to find number of points in sphere(radius r) By: Xavier Llobet on Tue, 22 November 2005 11:16
		Re: the fastest way to find number of points in sphere(radius r) By: MarioIncandenza on Tue, 22 November 2005 10:18
		Re: the fastest way to find number of points in sphere(radius r) By: Haje Korth on Tue, 22 November 2005 08:53
		Re: the fastest way to find number of points in sphere(radius r) By: Xavier Llobet on Tue, 22 November 2005 08:01
		Re: the fastest way to find number of points in sphere(radius r) By: Xavier Llobet on Tue, 22 November 2005 07:29
		Re: the fastest way to find number of points in sphere(radius r) By: btt on Tue, 22 November 2005 06:00
		Re: the fastest way to find number of points in sphere(radius r) By: snfinder@naver.com on Tue, 22 November 2005 05:14
		Re: the fastest way to find number of points in sphere(radius r) By: Xavier Llobet on Tue, 22 November 2005 04:16
		Re: the fastest way to find number of points in sphere(radius r) By: Xavier Llobet on Tue, 22 November 2005 04:02
		Re: the fastest way to find number of points in sphere(radius r) By: snfinder@naver.com on Tue, 22 November 2005 03:33
		Re: the fastest way to find number of points in sphere(radius r) By: Peter Clinch on Tue, 22 November 2005 01:13
		Re: the fastest way to find number of points in sphere(radius r) By: snfinder@naver.com on Tue, 22 November 2005 01:06
		Re: the fastest way to find number of points in sphere(radius r) By: Peter Clinch on Tue, 22 November 2005 00:31
		Re: the fastest way to find number of points in sphere(radius r) By: snfinder@naver.com on Tue, 22 November 2005 22:23

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