-------- 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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