similar to: Matching a period in grep...

Hi folks, Can anyone suggest an efficient way to do "matching without replacement", or "one-to-one matching"? pmatch() doesn't quite provide what I need... For example, lookupTable <- c("a","b","c","d","e","f") matchSample <- c("a","a","b","d") ##Normal match()

I thought that I can use metacharacters such as \w to match word characters with one backslash. But for some reason, I need to include two backslashes. > grepl(pattern='\w', x="what") Error: '\w' is an unrecognized escape in character string starting "\w" > grepl(pattern='\\w', x="what") [1] TRUE I can't find the reason for this

Hello, I have an expression that I want to substitute for something else. myvector<-c("ajkhfkiuwe","Variable(kg/min)") if I use the following code to extract "variable(kg/min)" and substitute it for "va" gsub(myvector[grep("var", myvector, ignore=T)], "va", myvector) grep identifies the element of the vector that matches my

Hello, when I use list.files with recursive = TRUE and all.files = TRUE, R returns a list of strings/paths. >From all those strings I want to keep only the ones starting with a . I tried using grep to achieve that. However, the problem is that because of the recursive list.files parameter, for some files beginning with a . there is a path attached. I think it is not as simple as it looks

?s 02:10 de 02/08/2024, Steven Yen escreveu: > Good Morning. Below I like statement like > > j<-grep(".r\\b",colnames(mydata),value=TRUE); j > > with the \\b option which I read long time ago which Ive found useful. > > Are there more or these options, other than ? grep? Thanks. > > dstat is just my own descriptive routine. > > > x > ?[1]

Dear all I'm having some problems with a data set that has parenthesis within the variable names. A example of this kind of variable names is the following: fBodyGyroskewness()Z The case is that R is having a lot of troubles to identify the variable (probably it does understand it like a function). I've tried (among other things) to remove the parenthesis from the name using the

Commit-ID: afc40b4eb057b08d8cc2eebefdf6cac05849e8ae Gitweb: http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=afc40b4eb057b08d8cc2eebefdf6cac05849e8ae Author: Herbert Xu <herbert at gondor.apana.org.au> AuthorDate: Wed, 28 Mar 2018 18:37:51 +0800 Committer: Ben Hutchings <ben at decadent.org.uk> CommitDate: Fri, 25 Jan 2019 02:57:21 +0000 [klibc] expand: Do not quote

Commit-ID: 6b0cf885180cfb08f7ec5139e67e581bbba5d6be Gitweb: http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=6b0cf885180cfb08f7ec5139e67e581bbba5d6be Author: Herbert Xu <herbert at gondor.apana.org.au> AuthorDate: Wed, 28 Mar 2018 18:37:51 +0800 Committer: Ben Hutchings <ben at decadent.org.uk> CommitDate: Sat, 28 Mar 2020 21:42:55 +0000 [klibc] dash: expand: Do not

OpenSSH 9.6 has just been released. It will be available from the mirrors listed at https://www.openssh.com/ shortly. OpenSSH is a 100% complete SSH protocol 2.0 implementation and includes sftp client and server support. Once again, we would like to thank the OpenSSH community for their continued support of the project, especially those who contributed code or patches, reported bugs, tested

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 14/02/15 16:53, Les Mikesell wrote: <snip> > To understand it completely you need to know the order of > operations as the shell makes multiple passes over the line, > parsing, processing metacharacters, and expanding variables. And > I don't know where to find a concise description of that any more. man bash, about 900

Dear all, I cannot figure out how to solve a small problem (well, not for me), surely somebody can help me in few seconds. I have a series of strings in a vector X of the type "xxx", "yyy", "zzz", "IgA", "IgG", "kkk", "IgM", "aaa". I want to substitute every ENTIRE string beginning with "Ig" with

for the script, please kindly see the script below. At line 10 and line 13, my problems occurs. The first one is I try to retrieve the gene official name from a column of a table. The pattern of official name is something starting with gene_name. For detail problems, please see the according lines. Any suggestions are appreciated example of matching source (extract the Nnat, sometime it would

Hi, I guess the backslash should not be used as the separator for strsplit() in compareVersion(), because the period in [.] is no longer a metacharacter (no need to "escape" it using a backslash): https://github.com/wch/r-source/blob/trunk/src/library/utils/R/packages.R#L866-L867 > compareVersion function (a, b) { .... a <- as.integer(strsplit(a, "[\\.-]")[[1L]])

Hello all, I have a simple question: I have filenames that look like these: "n031ku09.10msmeanc" "n031ku10.10msmeanc" "n031ku11.10msmeanc" [22] "n031ku12.10msmeanc" "n031ti01.10msmeanc" "n031ti02.10msmeanc" I also have a set of the same without the "c" at the end. When I run list.files(".",

Why sometimes one has to put a double backslash in regular expressions, but often simple backslashes work too? Is only a \ required for giving a metacharacter its usual meaning? --------------------------------------- u=grep('\\{[\\-u]x',a,perl=T) # equivalent to u=grep('\{[\-u]x',a,perl=T) # but u=grep('\w',a,perl=T) # is not correct and requires

Hi there, I rejoiced when I realized that you can use Perl regex from within R. However, as the FAQ states "Some functions, particularly those involving regular expression matching, themselves use metacharacters, which may need to be escaped by the backslash mechanism. In those cases you may need a quadruple backslash to represent a single literal one. " I was wondering if that is

Full_Name: FAN Version: 2.4.0 OS: Windows Submission from: (NULL) (159.50.101.9) These are expected: > grep("[\-|c]", c("a-a","b")) [1] 1 > gsub("[\-|c]", "&", c("a-a","b")) [1] "a&a" "b" but these are strange: > grep("[d|\-|c]", c("a-a","b")) integer(0)

I can't open a file (on our samba server) using Actis, When I troubleshoot the problem using Wireshark, see SMB protocol using FIND_FIRST2 and filename using obscure Windows metacharacters, e.g. USAARG03V>>A.SWK , which gives STATUS_NO_SUCH_FILE (Samba is interpreting the name literally) But if the files are copied to a local drive Actis can find them. Thanks for your

Followup of ed4bcb119cb908e98ecc1107dcd8b740ee2f484f. --- sysprep/sysprep_operation_delete.ml | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sysprep/sysprep_operation_delete.ml b/sysprep/sysprep_operation_delete.ml index 59d5485..3db3f57 100644 --- a/sysprep/sysprep_operation_delete.ml +++ b/sysprep/sysprep_operation_delete.ml @@ -40,7 +40,12 @@ let op = {

Good Morning. Below I like statement like j<-grep(".r\\b",colnames(mydata),value=TRUE); j with the \\b option which I read long time ago which Ive found useful. Are there more or these options, other than ? grep? Thanks. dstat is just my own descriptive routine. > x ?[1] "age"????????? "sleep"??????? "primary"????? "middle" ?[5]