[R] hex format

[Prof Brian Ripley]

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.

> 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.
>
>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595