Re: [R] removing blanks from a string

From: john seers (IFR) <john.seers_at_bbsrc.ac.uk>
Date: Fri, 27 Jun 2008 11:56:01 +0100

 

Hello

Yes, I am sure you are right. I guessed the intended question was not so specific.

I have always thought of spaces and blanks as the same thing. And use "white space" for a more general catch all description for tabs etc.

Is "white space" and "spaces" the same thing?

Regards

JS  

---
-----Original Message-----
From: Prof Brian Ripley [mailto:ripley_at_stats.ox.ac.uk] 
Sent: 27 June 2008 11:10
To: john seers (IFR)
Cc: jim holtman; juli pausas; R-help
Subject: Re: [R] removing blanks from a string

There are well-informed answers given as examples on the sub() help
page.

Hint 1: there is no need to globally substitute patterns anchored at the
end: they can only match in one place.  There is also no need to
substitute "" for "".

Hint 2: 'blank characters' and 'spaces' are not the same thing.
[:blank:] seems the relevant character class, so

sub("[[:blank:]]+$", "", x)

seems an accurate answer to the question asked (which might not be the
question intended).


On Fri, 27 Jun 2008, john seers (IFR) wrote:


> There is also the "trim" command in the gdata package. Removes blanks
> from the front of the string as well which may not be what you want.
But that removes *spaces* and not *blanks*, according to the help page (and the actual code -- in fact it removes only ASCII space characters and not others such as nbspace).
> Regards
>
> JS

> -----Original Message-----
> From: r-help-bounces_at_r-project.org
[mailto:r-help-bounces_at_r-project.org]
> On Behalf Of jim holtman
> Sent: 27 June 2008 10:27
> To: juli pausas
> Cc: R-help
> Subject: Re: [R] removing blanks from a string
>
> Is this what you want:
>
>> x <- c("hola ", "Yes ", "hello ")
>> gsub(" *$", "", x)
> [1] "hola" "Yes" "hello"
>>
>>
>
>
> On Fri, Jun 27, 2008 at 4:34 AM, juli pausas <pausas_at_gmail.com> wrote:
>> Hi
>> Is there a way to remove blank characters from the end of strings in
a
>
>> vector? Something like the =TRIM functions of the OpenOffice
>> spreadsheet. E.g.,
>> a <- c("hola ", "Yes ", "hello ") # I'd like to get:
>> c("hola", "Yes", "hello")
>>
>> Thanks
>>
>> Juli
-- 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 ______________________________________________ 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.
Received on Fri 27 Jun 2008 - 11:00:01 GMT

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