[R] Transform counts into presence/absence

[Johannes Radinger]

-------- Original-Nachricht --------
> Datum: Thu, 31 May 2012 11:16:32 +0000
> Von: "ONKELINX, Thierry" <Thierry.ONKELINX at inbo.be>
> An: Johannes Radinger <JRadinger at gmx.at>, "R-help at r-project.org" <R-help at r-project.org>
> Betreff: RE: [R] Transform counts into presence/absence

> Just use the logical operators.


of course, that simple :) . thank you!


> 
> Counts <- c(1,0,21,2,0,0,234,2,0)
> Counts > 0
> 1 *(Counts > 0)
> 
> ir. Thierry Onkelinx
> Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
> Forest
> team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
> Kliniekstraat 25
> 1070 Anderlecht
> Belgium
> + 32 2 525 02 51
> + 32 54 43 61 85
> Thierry.Onkelinx at inbo.be
> www.inbo.be
> 
> To call in the statistician after the experiment is done may be no more
> than asking him to perform a post-mortem examination: he may be able to say
> what the experiment died of.
> ~ Sir Ronald Aylmer Fisher
> 
> The plural of anecdote is not data.
> ~ Roger Brinner
> 
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> ~ John Tukey
> 
> 
> -----Oorspronkelijk bericht-----
> Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
> Namens Johannes Radinger
> Verzonden: donderdag 31 mei 2012 13:13
> Aan: R-help at r-project.org
> Onderwerp: [R] Transform counts into presence/absence
> 
> Hi,
> 
> I am looking for a very easy way to transform a column in a dataframe from
> counts (eg. c(1,0,21,2,0,0,234,2,0)) into a binary form to get
> presence/absence values e.g. c(1,0,1,1,0,0,1,1,0). Is there a simple built-in
> function?
> or do I have do to it with a replaceement funciton using IF x > 0 THEN 1
> etc.?
> 
> /johannes
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