[R] hex format

[Liaw, Andy]

> From: Steve Vejcik
> 
> On Thu, 2005-04-07 at 11:06, Prof Brian Ripley wrote:
> > On Thu, 7 Apr 2005, Steve Vejcik wrote:
> > 
> > > Thanks for your advice.  Unfortunately, your answers are 
> inconsistent:
> > > as.numeric("0x1AF0") returns a decimal value for a hex 
> string. I'd like
> > 
> > You don't understand how R works:
> > 
> > x <- as.numeric("0x1AF0")
> > 
> > produces an number, not its decimal representation.  A 
> number is a number 
> > is a number irrepsective of the the base of its character 
> representation.
> > 
> "as.numeric("0x1AF0") returns a decimal value for a hex string.
> If you prefer, substitute the word "shows" for "returns".

You don't seem to get the point.  as.numeric() is a function that _returns_
a _value_.  How you want that _value_ to be _shown_ is a different matter.
Would you substitute `I gave the money to the cashier' with `I showed the
money to the cashier'?

Andy

 
> > > to dothe opposite-use hex notation to represent a decimal.
> > > e.g.
> > >    x<-0x000A
> > >    y<-0x0001
> > >    x+y=0x00B
> > >
> > >     Cheers.
> > >
> > > On Thu, 2005-04-07 at 08:45, Prof Brian Ripley wrote:
> > >> On Thu, 7 Apr 2005, Steve Vejcik wrote:
> > >>
> > >>> Hello world:
> > >>> 	Has anyone used hex notation within R to 
> represents integers?
> > >>
> > >> That's a spectacularly vague question.  Short answer: yes.
> > >>
> > >>> as.numeric("0x1AF0")
> > >> [1] 6896
> > >>
> > >> (which BTW is system-dependent, but one person used it 
> as you asked).
> > >>
> > >> PLEASE read the posting guide and try for a `smarter' question.
> > >
> > >
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! 
> http://www.R-project.org/posting-guide.html
> 
> 
>