[R] Obtain the hex code for a given character.

[David Winsemius]

On Feb 4, 2014, at 4:57 PM, Rolf Turner wrote:

> 
> 
> If I have a character such as "£" stored in a object called "xxx", how can I obtain the hex code representation of this character?  In this case I know that the hex code is "\u00A3", but if I didn't, how would I find out?
> 
> I would like a function "foo()" such that foo(xxx) would return, say, the string "00A3".
> 

Close:

> as.hexmode(utf8ToInt("£"))
[1] "a3"


> I have googled and otherwise searched around and have come up with nothing that seemed at all helpful to me.  If I am missing something obvious, please point me at it.
> 
> (I have found a table on the web, which contains the information that I need, but it is only accessible "by eye" as far as I can discern.)
> 
> Supplementary question:  Suppose I have the string "00A3" stored in
> an object called "yyy".


> intToUtf8(as.hexmode('00A3'))
[1] "£"


>  How do I put that string together with "\u"
> so as to obtain "£"?  I thought I could do
> 
> 	xxx <- paste("\u",yyy,sep="")
> 
> but R won't let me use "\u" "without hex digits".  How can I get around this?
> 
> Thanks.
> 
> cheers,
> 
> Rolf Turner
> 
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David Winsemius
Alameda, CA, USA