On Fri, 27 Jun 2008, john seers (IFR) wrote:
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?
No. There are
spaces [e.g. ASCII space]
blank characters [e.g. ASCII space and tab]
whitespace [e.g. ASCII space, tab and newline]
that are usually increasingly more general. But CR, FF and VT are
normally whitespace, and internationalized programs will generally allow
other space characters, including nbspace (and Unicode category Zs).
Regards
JS
---
-----Original Message-----
From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
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:]]+$", "", x)
seems an accurate answer to the question asked (which might not be the
question intended).
On Fri, 27 Jun 2008, john seers (IFR) wrote:
There is also the "trim" command in the gdata package. Removes blanks
from the front of the string as well which may not be what you want.
But that removes *spaces* and not *blanks*, according to the help page
(and the actual code -- in fact it removes only ASCII space characters
and not others such as nbspace).
Regards
JS
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
On Behalf Of jim holtman
Sent: 27 June 2008 10:27
To: juli pausas
Cc: R-help
Subject: Re: [R] removing blanks from a string
Is this what you want:
x <- c("hola ", "Yes ", "hello ")
gsub(" *$", "", x)
[1] "hola" "Yes" "hello"
On Fri, Jun 27, 2008 at 4:34 AM, juli pausas <[EMAIL PROTECTED]> 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, [EMAIL PROTECTED]
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
--
Brian D. Ripley, [EMAIL PROTECTED]
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
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