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Re: random number seed initialisation [message #87504 is a reply to message #87502]

Sun, 09 February 2014 18:37

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Bogdanovist writes:

> I have a system that will be used by multiple users that, as a part of it, requires the creation of temporary files that I just give a random file name. I'm not sure how IDL goes about initialising the random seed if you don't supply it, so how can I ensure that different users running concurrently won't use the same initial seed and hence end up with the same file names?

Use the RandomNumberGenerator object from the Coyote Library:

http://www.idlcoyote.com/programs/randomnumbergenerator__def ine.pro

Cheers,

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

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[Message index]

		random number seed initialisation By: Matt Francis on Sun, 09 February 2014 18:21
		Re: random number seed initialisation By: David Fanning on Sun, 09 February 2014 18:37
		Re: random number seed initialisation By: Matt Francis on Mon, 10 February 2014 15:11
		Re: random number seed initialisation By: David Fanning on Mon, 10 February 2014 15:22
		Re: random number seed initialisation By: Matt Francis on Mon, 10 February 2014 15:32
		Re: random number seed initialisation By: David Fanning on Mon, 10 February 2014 15:42
		Re: random number seed initialisation By: David Fanning on Tue, 11 February 2014 07:22
		Re: random number seed initialisation By: Mats Löfdahl on Tue, 11 February 2014 01:34

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