Hi, I have a question about vector access. sorry if it is too basic.> aae21 1.863869 My question is how to retrieve "ae21" from vector "a". here is some other information you might need.> str(a)Named num 1.86 - attr(*, "names")= chr"ae21"> class(a)[1] "numeric"> is.vector(a)[1] TRUE> a[[1]][1] 1.863869 Thank you in advance for your help! Xin -- View this message in context: http://r.789695.n4.nabble.com/vector-access-tp2968825p2968825.html Sent from the R help mailing list archive at Nabble.com.
Dear Xin,
You really provided great information! You can use the function,
names(). Here is an example:
# mimic your data
a <- c("ae21" = 1.863869)
a
names(a)
# the result should be> names(a)
[1] "ae21"
Hope that helps, and thanks for making it easy to answer,
Josh
On Fri, Oct 8, 2010 at 11:07 AM, Xgong <xingong98 at gmail.com>
wrote:>
> Hi,
>
> I have a question about vector access. sorry if it is too basic.
>
>> a
> ae21
> ? ?1.863869
>
> My question is how to retrieve "ae21" from vector "a".
here is some other
> information you might need.
>
>> str(a)
> ?Named num 1.86
> ?- attr(*, "names")= chr"ae21"
>> class(a)
> [1] "numeric"
>> is.vector(a)
> [1] TRUE
>> a[[1]]
> [1] 1.863869
>
> Thank you in advance for your help!
>
> Xin
> --
> View this message in context:
http://r.789695.n4.nabble.com/vector-access-tp2968825p2968825.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.
>
--
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
http://www.joshuawiley.com/
names(a) On Fri, Oct 8, 2010 at 3:07 PM, Xgong <xingong98@gmail.com> wrote:> > Hi, > > I have a question about vector access. sorry if it is too basic. > > > a > ae21 > 1.863869 > > My question is how to retrieve "ae21" from vector "a". here is some other > information you might need. > > > str(a) > Named num 1.86 > - attr(*, "names")= chr"ae21" > > class(a) > [1] "numeric" > > is.vector(a) > [1] TRUE > > a[[1]] > [1] 1.863869 > > Thank you in advance for your help! > > Xin > -- > View this message in context: > http://r.789695.n4.nabble.com/vector-access-tp2968825p2968825.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@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. >-- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[alternative HTML version deleted]]