[R] Vectorise a for loop?

john seers (IFR) john.seers at bbsrc.ac.uk
Tue Sep 26 15:10:12 CEST 2006



Hi Jacques

Yes, that looks a whole lot better. That "ifelse" is exactly what I was searching for. 

Merci.

J

 
---

John Seers
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-----Original Message-----
From: Jacques VESLOT [mailto:jacques.veslot at good.ibl.fr] 
Sent: 26 September 2006 14:02
To: john seers (IFR)
Cc: R-help
Subject: Re: [R] Vectorise a for loop?


tt$fold <- ifelse(tt$M < 0, 1/(2^tt$M), 2^tt$M)
-------------------------------------------------------------------
Jacques VESLOT

CNRS UMR 8090
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B.P. 245
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Fax : 33 (0)3.20.87.10.31

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