[R] compare three values

[ONKELINX, Thierry]

Have a look at switch() and which.min()

x <- c(a = 3, b = 1, c = 5)
switch(which.min(x), "a is lowest", "b is lowest", "c is lowest")

HTH,

Thierry

------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek
team Biometrie & Kwaliteitszorg
Gaverstraat 4
9500 Geraardsbergen
Belgium

Research Institute for Nature and Forest
team Biometrics & Quality Assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium

tel. + 32 54/436 185
Thierry.Onkelinx op 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-bounces op r-project.org 
> [mailto:r-help-bounces op r-project.org] Namens Alfredo Alessandrini
> Verzonden: maandag 30 augustus 2010 12:03
> Aan: r-help op r-project.org
> Onderwerp: [R] compare three values
> 
> Hi,
> 
> I've three values. What is the best method to choice the 
> lowest values with an if function?
> 
> example:
> 
> a = 3
> 
> b = 1
> 
> c = 5
> 
> if (lowest(a,b,c) is a) {........}
> 
> if (lowest(a,b,c) is b) {........}
> 
> if (lowest(a,b,c) is c) {........}
> 
> 
> 
> Thanks,
> 
> Alfredo
> 
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> 

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