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Re: selecting radnom number from 2D array [message #75410 is a reply to message #75409]

Thu, 10 March 2011 08:03

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Paolo writes:

> Please do be careful and recognize that a random point
> on a sphere will not have a uniform distribution of latitudes,
> and a set of point with a uniform distribution of latitudes
> will not be uniform on a sphere.
>
> For instance to obtain the following uniform distributions
>
> www.grigis.ch/spherepoints.png
>
> I had to account for that.

Here is more information about points on a sphere:

http://www.idlcoyote.com/code_tips/pts_in_sphere.html

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: selecting radnom number from 2D array By: David Fanning on Thu, 10 March 2011 08:08
		Re: selecting radnom number from 2D array By: David Fanning on Thu, 10 March 2011 08:03
		Re: selecting radnom number from 2D array By: pgrigis on Thu, 10 March 2011 07:46
		Re: selecting radnom number from 2D array By: Gray on Wed, 09 March 2011 17:09
		Re: selecting radnom number from 2D array By: Ashok on Thu, 10 March 2011 14:57

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