[R] Transform counts into presence/absence

[ONKELINX, Thierry]

Just use the logical operators.

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
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-----Oorspronkelijk bericht-----
Van: r-help-bounces op r-project.org [mailto:r-help-bounces op r-project.org] Namens Johannes Radinger
Verzonden: donderdag 31 mei 2012 13:13
Aan: R-help op 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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