[R] gremlin in rep()

[Liaw, Andy]

This is what I got in Splus 2000:

> rep(1:3,c(4,5,-6))
Error in rep.int: Negative values in "times" meaningless: rep.int(x, times)

Seems like rep() is R is lacking some error traps.

Andy

> ----------
> From: 	Yves Gauvreau[SMTP:cyg at sympatico.ca]
> Sent: 	Friday, July 28, 2000 11:51 AM
> To: 	r-help
> Subject: 	Re: [R] gremlin in rep()
> 
> I tried it on NT 4 SP 6 R-1.1.0 and it crashes too.
> 
> If you try rep(1:3, c(1,3)) you'll get:
> 
> Error in rep(1:3, c(1, 3)) : invalid number of copies in "rep"
> 
> It look's like R doesn't like the negative number in your case. It would
> be
> nice if it would give the same error message in both case.
> 
> YG
> 
> ----- Original Message -----
> From: "Colin Farrow" <c.farrow at compserv.gla.ac.uk>
> To: "r-help" <r-help at stat.math.ethz.ch>
> Sent: Friday, July 28, 2000 10:29 AM
> Subject: [R] gremlin in rep()
> 
> 
> > the following occurred inadvertently and brought R-1.1.0 down
> >
> > rep(1:3, c(4,2,-6))
> > Segmentation Fault (core dumped)
> >
> > platform i686-pc-linux-gnu
> > arch     i686
> > os       linux-gnu
> > system   i686, linux-gnu
> > status
> > major    1
> > minor    1.0
> > year     2000
> > month    June
> > day      15
> > language R
> > also on Solaris2.7
> >
> > --
> > Colin Farrow
> > Computing Service, University of Glasgow, Glasgow G12 8QQ
> > Tel: 0141 330 4862, c.farrow at compserv.gla.ac.uk
> >
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