Dear, Below, jj contains character strings starting with ?z.? and ?x.?.
I want to grep all that contain either ?z.? or ?x.?. I had to grep ?z.?
and ?x.? separately and then tack the result together. Is there a
convenient grep option that would grep strings with either ?z.? or ?x.?.
Thank you!
> jj<-names(v$est); jj
?[1] "z.one"???? "z.liberal" "z.conserv" "z.dem"???? "z.rep" "z.realinc"
?[7] "x.one"???? "x.liberal" "x.conserv" "x.dem"???? "x.rep" "x.realinc"
[13] "mu1_1"???? "mu2_1"???? "rho"
> j1<-grep("z.",jj,value=TRUE); j1
[1] "z.one"???? "z.liberal" "z.conserv" "z.dem"???? "z.rep" "z.realinc"
> j2<-grep("x.",jj,value=TRUE); j2
[1] "x.one"???? "x.liberal" "x.conserv" "x.dem"???? "x.rep" "x.realinc"
> j<-c(j1,j2); j
?[1] "z.one"???? "z.liberal" "z.conserv" "z.dem"???? "z.rep" "z.realinc"
?[7] "x.one"???? "x.liberal" "x.conserv" "x.dem"???? "x.rep" "x.realinc"
grep
5 messages · Jeff Newmiller, Andrew Simmons, Steven Yen
grep( "^(z|x)\\.", jj, value = TRUE ) or grep( r"(^(z|x)\.)", jj, value = TRUE )
On July 10, 2022 6:08:45 PM PDT, "Steven T. Yen" <styen at ntu.edu.tw> wrote:
Dear, Below, jj contains character strings starting with ?z.? and ?x.?. I want to grep all that contain either ?z.? or ?x.?. I had to grep ?z.? and ?x.? separately and then tack the result together. Is there a convenient grep option that would grep strings with either ?z.? or ?x.?. Thank you!
jj<-names(v$est); jj
?[1] "z.one"???? "z.liberal" "z.conserv" "z.dem"???? "z.rep" "z.realinc" ?[7] "x.one"???? "x.liberal" "x.conserv" "x.dem"???? "x.rep" "x.realinc" [13] "mu1_1"???? "mu2_1"???? "rho"
j1<-grep("z.",jj,value=TRUE); j1
[1] "z.one"???? "z.liberal" "z.conserv" "z.dem"???? "z.rep" "z.realinc"
j2<-grep("x.",jj,value=TRUE); j2
[1] "x.one"???? "x.liberal" "x.conserv" "x.dem"???? "x.rep" "x.realinc"
j<-c(j1,j2); j
?[1] "z.one"???? "z.liberal" "z.conserv" "z.dem"???? "z.rep" "z.realinc" ?[7] "x.one"???? "x.liberal" "x.conserv" "x.dem"???? "x.rep" "x.realinc"
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
Sent from my phone. Please excuse my brevity.
Thanks Jeff. It works. If there is a good reference I should read (besides ? grep) I's be glad to have it.
On 7/11/2022 9:30 AM, Jeff Newmiller wrote:
grep( "^(z|x)\\.", jj, value = TRUE ) or grep( r"(^(z|x)\.)", jj, value = TRUE ) On July 10, 2022 6:08:45 PM PDT, "Steven T. Yen" <styen at ntu.edu.tw> wrote:
Dear, Below, jj contains character strings starting with ?z.? and ?x.?. I want to grep all that contain either ?z.? or ?x.?. I had to grep ?z.? and ?x.? separately and then tack the result together. Is there a convenient grep option that would grep strings with either ?z.? or ?x.?. Thank you!
jj<-names(v$est); jj
?[1] "z.one"???? "z.liberal" "z.conserv" "z.dem"???? "z.rep" "z.realinc" ?[7] "x.one"???? "x.liberal" "x.conserv" "x.dem"???? "x.rep" "x.realinc" [13] "mu1_1"???? "mu2_1"???? "rho"
j1<-grep("z.",jj,value=TRUE); j1
[1] "z.one"???? "z.liberal" "z.conserv" "z.dem"???? "z.rep" "z.realinc"
j2<-grep("x.",jj,value=TRUE); j2
[1] "x.one"???? "x.liberal" "x.conserv" "x.dem"???? "x.rep" "x.realinc"
j<-c(j1,j2); j
?[1] "z.one"???? "z.liberal" "z.conserv" "z.dem"???? "z.rep" "z.realinc" ?[7] "x.one"???? "x.liberal" "x.conserv" "x.dem"???? "x.rep" "x.realinc"
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
?regex is a nice starting point, it's got plenty of details on meta
characters and characters classes, if you need more advanced stuff you'll
probably have to look at the perl regex documentation, I believe it's
linked in ?regex.
I might try something like
grep("^[xz]\\.")
or
grep("^[xz][.]")
or if you'd consider a different function,
startsWith(jj, "x.") | startsWith(jj, "z.")
On Sun, Jul 10, 2022, 21:49 Steven T. Yen <styen at ntu.edu.tw> wrote:
Thanks Jeff. It works. If there is a good reference I should read (besides ? grep) I's be glad to have it. On 7/11/2022 9:30 AM, Jeff Newmiller wrote:
grep( "^(z|x)\\.", jj, value = TRUE ) or grep( r"(^(z|x)\.)", jj, value = TRUE ) On July 10, 2022 6:08:45 PM PDT, "Steven T. Yen" <styen at ntu.edu.tw>
wrote:
Dear, Below, jj contains character strings starting with ?z.? and ?x.?.
I want to grep all that contain either ?z.? or ?x.?. I had to grep ?z.? and ?x.? separately and then tack the result together. Is there a convenient grep option that would grep strings with either ?z.? or ?x.?. Thank you!
jj<-names(v$est); jj
[1] "z.one" "z.liberal" "z.conserv" "z.dem" "z.rep"
"z.realinc"
[7] "x.one" "x.liberal" "x.conserv" "x.dem" "x.rep"
"x.realinc"
[13] "mu1_1" "mu2_1" "rho"
j1<-grep("z.",jj,value=TRUE); j1
[1] "z.one" "z.liberal" "z.conserv" "z.dem" "z.rep" "z.realinc"
j2<-grep("x.",jj,value=TRUE); j2
[1] "x.one" "x.liberal" "x.conserv" "x.dem" "x.rep" "x.realinc"
j<-c(j1,j2); j
[1] "z.one" "z.liberal" "z.conserv" "z.dem" "z.rep"
"z.realinc"
[7] "x.one" "x.liberal" "x.conserv" "x.dem" "x.rep"
"x.realinc"
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see 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. ______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
Thank you all.
On 7/11/2022 10:32 AM, Andrew Simmons wrote:
?regex is a nice starting point, it's got plenty of details on meta
characters and characters classes, if you need more advanced stuff
you'll probably have to look at the perl regex documentation, I
believe it's linked in ?regex.
I might try something like
grep("^[xz]\\.")
or
grep("^[xz][.]")
or if you'd consider a different function,
startsWith(jj, "x.") | startsWith(jj, "z.")
On Sun, Jul 10, 2022, 21:49 Steven T. Yen <styen at ntu.edu.tw> wrote:
Thanks Jeff. It works. If there is a good reference I should read
(besides ? grep) I's be glad to have it.
On 7/11/2022 9:30 AM, Jeff Newmiller wrote:
> grep( "^(z|x)\\.", jj, value = TRUE )
>
> or
>
> grep( r"(^(z|x)\.)", jj, value = TRUE )
>
>
> On July 10, 2022 6:08:45 PM PDT, "Steven T. Yen"
<styen at ntu.edu.tw> wrote:
>> Dear, Below, jj contains character strings starting with ?z.?
and ?x.?. I want to grep all that contain either ?z.? or ?x.?. I
had to grep ?z.? and ?x.? separately and then tack the result
together. Is there a convenient grep option that would grep
strings with either ?z.? or ?x.?. Thank you!
>>
>>> jj<-names(v$est); jj
>>? ?[1] "z.one"???? "z.liberal" "z.conserv" "z.dem" "z.rep"
"z.realinc"
>>? ?[7] "x.one"???? "x.liberal" "x.conserv" "x.dem" "x.rep"
"x.realinc"
>> [13] "mu1_1"???? "mu2_1"???? "rho"
>>> j1<-grep("z.",jj,value=TRUE); j1
>> [1] "z.one"???? "z.liberal" "z.conserv" "z.dem" "z.rep" "z.realinc"
>>> j2<-grep("x.",jj,value=TRUE); j2
>> [1] "x.one"???? "x.liberal" "x.conserv" "x.dem" "x.rep" "x.realinc"
>>> j<-c(j1,j2); j
>>? ?[1] "z.one"???? "z.liberal" "z.conserv" "z.dem" "z.rep"
"z.realinc"
>>? ?[7] "x.one"???? "x.liberal" "x.conserv" "x.dem" "x.rep"
"x.realinc"
>>
>> ______________________________________________
>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html <http://www.R-project.org/posting-guide.html> >> and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html <http://www.R-project.org/posting-guide.html> and provide commented, minimal, self-contained, reproducible code.