[R] remove leading slash

[peter dalgaard]

On Jun 8, 2012, at 19:25 , David Winsemius wrote:

> 
> On Jun 8, 2012, at 1:11 PM, Ben quant wrote:
> 
>> Hello,
>> 
>> How do I change this:
>>> cnt_str
>> [1] "\002" "\001" "\102"
>> 
>> ...to this:
>>> cnt_str
>> [1] "2" "1" "102"
>> 
>> Having trouble because of this:
>>> nchar(cnt_str[1])
>> [1] 1
> 
> "\001" is ASCII cntrl-A, a single character.
> 
> ?Quotes   # not the first, second or third place I looked but I knew I had seen it before.
> 

However, if you insist, this seems to do it:

> as.character(as.octmode(as.integer(charToRaw(paste(x,collapse="")))))
[1] "002" "001" "102"
> str(as.character(as.octmode(as.integer(charToRaw(paste(x,collapse=""))))))
 chr [1:3] "002" "001" "102"
> x
[1] "\002" "\001" "B"   

(NB Octal code "\102" is a "B".)

Or, as I suspect the above is doing internally:

> sprintf("%03o", as.integer(charToRaw(paste(x,collapse=""))))
[1] "002" "001" "102"

-pd

> 
>> 
>> Thanks!
>> 
>> Ben
>> 
>> 	[[alternative HTML version deleted]]
>> 
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
> 
> David Winsemius, MD
> West Hartford, CT
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com