Re: [R] Replacing elements of a list over a certain threshold

From: Joris Meys <jorismeys_at_gmail.com>
Date: Mon, 21 Jun 2010 12:47:26 +0200

"magic" code:
example[example>threshold] <-threshold

Cheers
Joris

On Mon, Jun 21, 2010 at 12:34 PM, Jim Hargreaves <james_at_ipec.co.uk> wrote:
> Dear List,
>
> I have a list of length ~1000 filled with numerics. I need to replace the
> elements of this list that are above a certain numerical threshold with the
> value of the threshold.
>
> e.g
> example=list(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1)
> threshold=5
> <magic code goes here>
> example=(1, 2, 3, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1).
>
> I have written a crude script that achieves this but it's very slow. Is
> there a way to do this using some R function?
>
> Crude script: http://pastebin.com/3KSfi8nD
>
> ______________________________________________
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>

-- 
Joris Meys
Statistical consultant

Ghent University
Faculty of Bioscience Engineering
Department of Applied mathematics, biometrics and process control

tel : +32 9 264 59 87
Joris.Meys_at_Ugent.be
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Received on Mon 21 Jun 2010 - 10:49:25 GMT

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