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

[Joris Meys]

"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
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
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
-------------------------------
Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php