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Re: "bootstrap" statistics [message #30933 is a reply to message #30849]

Sat, 25 May 2002 12:10

wmconnolley
Messages: 106
Registered: November 2000

Senior Member

Med Bennett <mwbennett@windra.com> wrote:
> The way to do this without using the same value more than once is to use the sort
> command. First, generate m uniform random numbers, then find the sort indices of
> the random numbers. For example, if you want to randomly pick 50 out of 100
> values:

> IDL> junk = randomu(seed,100)
> IDL> s=sort(junk)
> IDL> print,s[0:49]

Ah. Yes. Clever. (I have a feeling thats what one other post was trying to tell
me but wasn't so clear).

-W.

--
William M Connolley | wmc@bas.ac.uk | http://www.nerc-bas.ac.uk/icd/wmc/
Climate Modeller, British Antarctic Survey | Disclaimer: I speak for myself
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[Message index]

		"bootstrap" statistics By: wmconnolley on Mon, 20 May 2002 12:41
		Re: "bootstrap" statistics By: Wayne Landsman on Mon, 27 May 2002 12:55
		Re: "bootstrap" statistics By: Richard Younger on Thu, 30 May 2002 16:04
		Re: "bootstrap" statistics By: wmconnolley on Sat, 25 May 2002 12:10
		Re: "bootstrap" statistics By: Med Bennett on Sat, 25 May 2002 07:43

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