Message-ID: <Pine.LNX.4.61.0504071703560.26821@gannet.stats>
Date: 2005-04-07T16:06:10Z
From: Brian Ripley
Subject: hex format
In-Reply-To: <1112883259.21347.19.camel@westgate>
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