Displaying 20 results from an estimated 5000 matches similar to: "gsub: replacing double backslashes with single backslash"
2012 Dec 17
2
Formatting a path for unix with gsub
I have a path:
path = "/nfs/users/nfs_n/ns9/
Phenotype Analysis/Results/Run_AmplRatio_neg
BinaryAll trained without akapn+tnik.csv"
I wish to replace the spaces with "\ " so that it can be read by a system
call to unix.
Using gsub I try:
> gsub(" ","\\ ",path)
[1] "/nfs/users/nfs_n/ns9/Phenotype Analysis/Results/Run_AmplRatio_neg
BinaryAll
2023 May 30
3
why does [A-Z] include 'T' in an Estonian locale?
Inspired by this old Stack Overflow question
https://stackoverflow.com/questions/19765610/when-does-locale-affect-rs-regular-expressions
I was wondering why this is TRUE:
Sys.setlocale("LC_ALL", "et_EE")
grepl("[A-Z]", "T")
TRE's documentation at
<https://laurikari.net/tre/documentation/regex-syntax/> says that a
range "is shorthand for
2011 Jul 17
3
gsub() with unicode and escape character
Dear helpers,
I'm trying to replace a character with a unicode code inside a data
frame using gsub(), but unsuccessfully.
> data.frame(animals=c("dog","wolf","cat"))->my.data
> gsub("o","\u0254",my.data$animals)->my.data$animals
> my.data$animals
[1] "d??g" "w??lf" "cat"
It's not that a data
2023 Jun 01
1
why does [A-Z] include 'T' in an Estonian locale?
On 5/30/23 17:45, Ben Bolker wrote:
> Inspired by this old Stack Overflow question
>
> https://stackoverflow.com/questions/19765610/when-does-locale-affect-rs-regular-expressions
>
>
> I was wondering why this is TRUE:
>
> Sys.setlocale("LC_ALL", "et_EE")
> grepl("[A-Z]", "T")
>
> TRE's documentation at
>
2003 Aug 12
3
grep and gsub on backslash and quotes
The following code works, to gsub single quotes to double quotes:
line <- gsub("'", '"', line)
(that's a single quote within doubles then a double within singles if
your
viewer's font is not good).
But The R Language Manual tells me that
Quotes and other special characters within strings
are specified using escape sequences:
\' single quote
\"
2004 Aug 27
3
gsub, backslash and xtable
R Version 1.9.1 (2004-06-21)
Mac OS X.3.5 Dual 2GHz PowerPC G5
GUI = "AQUA"
I have a data.frame comprising percentiles with the column headings
containing % characters, e.g.
> (pp <- colnames(temp2))
[1] "5%" "10%" "25%" "50%" "75%" "90%" "95%"
I use xtable to convert the data.frame to Latex but I want to
2006 Apr 24
3
gsub + backslashes
Dear developeRs,
I thought that backslashes can be escaped in the usual way (and I think I
did this before) but I can't see why
R> gsub("\\", "x", "\alpha")
Error in gsub(pattern, replacement, x, ignore.case, extended, fixed,
useBytes) :
invalid regular expression '\'
gives an error. Or am I just blind?
Best,
Torsten
R> version
2008 May 09
4
Gnome-terminal's backslashes look like Ws with a horizontal line through -- how to get a backslash?
Hello!
I've just started trying gnome-terminal (instead of xterm) because of
its "tabbing" facility. However, I note that with it backslashes appear
something like a W with a horizontal line through it. Any known way to
get a backslash to appear as a backslash?
To see what I mean, use gnome-terminal with
echo '\'
in bash, ksh, etc.
Regards,
Chip Campbell
2009 Jun 09
6
[LLVMdev] Regular Expressions
On Tuesday 09 June 2009 04:35, Török Edwin wrote:
> On 2009-06-09 12:27, Howard Su wrote:
> > This change break the MSVC build since no regex by default in Windows
> > MSVC platform.
>
> Perhaps we should add a regex implementation to lib/System?
That's potentially a lot of work. I started looking at it and it would
involve hiding the OpenBSD library under some other
2009 Jun 09
0
[LLVMdev] Regular Expressions
On Tue, Jun 9, 2009 at 12:00 PM, David Greene<dag at cray.com> wrote:
> On Tuesday 09 June 2009 04:35, Török Edwin wrote:
>> On 2009-06-09 12:27, Howard Su wrote:
>> > This change break the MSVC build since no regex by default in Windows
>> > MSVC platform.
>>
>> Perhaps we should add a regex implementation to lib/System?
>
> That's
2002 Aug 29
2
problem with toString
Hi,
I am using R 1.5.1 under Windows 2000. I have a problem with the function toString: It seems not to work for longer
vectors as expressions.
This example works well:
q1<-expression(c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15))
toString(q1)
I get:
"c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)" => OK
But this one does not:
2006 May 17
1
changing single to double backslash
Hi, all. I didn't find something like this in the faq
list:
I wound like build a function to substitute single
backslashes in a string to double:
ChangeSlash<-function(dir) ...
so
ChangeSlash("C:\mydocs\test")
returns
"C:\\mydocs\\test"
Thanks,
C.
_______________________________________________________
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2011 Nov 04
3
replace double backslash with singel backslash
I want to replace \\ with \ in:
str <-
"C:\\DOKUME~1\\u0327336\\LOKALE~1\\Temp\\RtmpQ5NJ8X\\TIRIS_PICS\\1_Img.jpg"
and tried:
gsub("\\\\", "\\", str)
but this removes the \\ without replacing them by \
Any help much appreciated,
Kay
-----
------------------------
Kay Cichini
Postgraduate student
Institute of Botany
Univ. of Innsbruck
------------------------
2011 Apr 29
1
regular expression in gsub() for strings with leading backslash
Hello,
Can anyone help on gsub() in R? I have a string like something below, and
wanted to delete all the strings with leading backslash, including "\xa0On",
"\023, "\xab", and many others. How should I write a regular expression
pattern in gsub()? I don't care how many characters following backslash.
txt <- "Is This Thing\xa0On? http://bit.ly/jAbKem
2009 Jan 23
2
forward slash vs double backslash R and Tinn-R
I installed the newest version of R and once again ran into problem
with Tinn-R failing when trying to use the R explorer. I had this
problem once before and solved it when I added the following
.trPaths = c(
'C:/Documents and Settings/fbuchins/Application Data/Tinn-R/tmp/',
'C:/Documents and Settings/fbuchins/Application Data/Tinn-R/tmp/search.txt',
'C:/Documents and
2009 Aug 24
0
[LLVMdev] Regular Expression lib support
On Sun, Aug 23, 2009 at 5:56 PM, Daniel Dunbar<daniel at zuster.org> wrote:
> We would like to have access to some kind of regular expression
> library inside LLVM. For example, we need this to extend the FileCheck
> test case checking tool to support regular expressions.
>
> There are three obvious options:
> 1. Roll our own library. Multiple unnamed individuals may even
2004 Nov 30
3
Problem with print() and backslashes.
Dear R List
I have a small problem concerning the output of print().
My version:
> R.version
_
platform i386-portbld-freebsd5.2
arch i386
os freebsd5.2
system i386, freebsd5.2
status
major 1
minor 9.0
year 2004
month 04
day 12
language R
Consider this: I want to print a backslash with an exclamation mark. Here
is the output.
> print( "\!"
2009 Apr 03
2
Removing backslashes from data
I am trying to check for backslashes in data, then remove them when I
find them, but am having a difficult time figuring out the best way to
do it. I know the backslash is the escape character in R, and I
should be able to use 'gsub' to accomplish this, but I all I seem to
be getting are errors. For example:
If entry is:
"Hello\World"
I want:
"HelloWorld"
2006 Jan 05
1
How do I get sub to insert a single backslash?
Something about the way R processes backslashes is defeating me.
Perhaps this is because I have only just started using R for text processing.
I would like to change occurrences of the ampersand & into ampersand
preceded by a backslash.
> temp <- "R & D"
> sub("&", "\&", temp)
[1] "R & D"
> sub("&",
2011 Aug 30
2
url prep function (backslash issue)
Greeting R
Community,
I am a
windows user so this problem may be specific to windows. I often want to source
files from within R
such as:
C:\Users\Rinker\Desktop\Research & Law\Data\School Data 09-10. To source
this file I need to go
through the
path and replace all the backslashes (\) with forward slashes (/). I usually do
this in MS Word
using the
replace option, however, I'd like