[R] Simple monovariate classification?

[Greg Hirson]

Richard,

More specifically,

x = c(0,10,5,1,9,6)

cut(x, breaks = c(-Inf, 2.5,7.5, Inf), labels = c(1, 2, 3))
#[1] 1 3 2 1 3 2

Hope that helps,

Greg

rgunton at dijon.inra.fr wrote:
>
> I'm looking for an R function that simply recodes a quantitative 
> variable into a number of classes according to specified break-points. 
>  Obviously I can do this using nested ifelse() commands, but I want to 
> write it into a function where I can't pre-specify the number of 
> classes.  Is there an obvious way to do this?
>
> An example to clarify: how to convert c(0,10,5,1,9,6) to 
> c(1,3,2,1,3,2) by specifying "breaks"=c(2.5,7.5) - or something like 
> that.
>
> Thanks,
>
> Richard Gunton.
> INRA-Dijon, France
>
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-- 
Greg Hirson
ghirson at ucdavis.edu

Graduate Student
Agricultural and Environmental Chemistry

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