[R] converting to factor

[Sundar Dorai-Raj]

R. Sean Bowman wrote:
> hello,
> 
> I have a list of numbers that I want to convert into factors representing
> ranges of values.  For example, if I have
> 
> c(2.5, 1.6, 3.2)
> 
> I might want a list of factors like
> 
> c("<3", "<3", ">3")
> 
> I think I can do this by writing a function and using apply, as.matrix,
> &c., but I'm looking for a nicer way.  Any help is greatly appreciated.
> 

See ?cut.

R> cut(c(2.5, 1.6, 3.2), 3)
[1] (2.13,2.67] (1.6,2.13]  (2.67,3.2]
Levels: (1.6,2.13] (2.13,2.67] (2.67,3.2]