Hi
I was curious on the possibilities -- what if an NA creeps in?
Counts <- c(1,0,21,2,0,0,234,2,0,NA)
Counts > 0
1 *(Counts > 0)
[1] 1 0 1 1 0 0 1 1 0 NA
as.integer(x != 0)
[1] 1 0 1 1 0 0 1 1 0
Regards
Duncan
Duncan Mackay
Department of Agronomy and Soil Science
University of New England
Armidale NSW 2351
Email: home: mac...@northnet.com.au
At 21:27 31/05/2012, you wrote:
-------- Original-Nachricht --------
> Datum: Thu, 31 May 2012 11:16:32 +0000
> Von: "ONKELINX, Thierry" <thierry.onkel...@inbo.be>
> An: Johannes Radinger <jradin...@gmx.at>, "R-help@r-project.org"
<R-help@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.onkel...@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
>
> The combination of some data and an aching desire for an answer does not
> ensure that a reasonable answer can be extracted from a given body of data.
> ~ John Tukey
>
>
> -----Oorspronkelijk bericht-----
> Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
> Namens Johannes Radinger
> Verzonden: donderdag 31 mei 2012 13:13
> Aan: R-help@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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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
