[R] seq curiosity

[Laurent Gautier]

On Fri, May 03, 2002 at 06:14:23PM +1000, John Aitchison wrote:
> 
> 
> Is this a bug or a feature?
> 
> > seq(0:4)  # colon 
> [1] 1 2 3 4 5
> > 0:4
> [1] 0 1 2 3 4
> > seq(0,4)
> [1] 0 1 2 3 4
> 
> I am aware that the first usage is incorrect, but I was surprised that
> I did not get any sort of syntax error
> 

The first usage is not 'incorrect'. help(seq) says :
------------
Usage:

     from:to
     seq(from, to)
     seq(from, to, by=)
     seq(from, to, length=)
     seq(along)
------------

It returns a sequence of indices 'along' the given vector...




Hopin' it helps,



L.





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Laurent Gautier			CBS, Building 208, DTU
PhD. Student			D-2800 Lyngby,Denmark	
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