Re: [R] select rows from data based on a vector of char strings

From: Jorge Ivan Velez <jorgeivanvelez_at_gmail.com>
Date: Wed, 23 Apr 2008 20:34:44 -0400

I'm sorry about that. Second line should be

attach(yourdata)

Cheers,

Jorge

On Wed, Apr 23, 2008 at 7:48 PM, Jorge Ivan Velez <jorgeivanvelez_at_gmail.com> wrote:

>
> Try this,
>
> x="label freq1 freq2
> news 54 35
> fun 37 21
> milk 19 7
> food 3 3"
>
> yourdata=read.table(textConnection(x),header=TRUE)
> attached(yourdata)
> flist<-c("fun","food")
>
> yourdata[label %in% flist,]
>
>
> I hope this helps,
>
>
> Jorge
>
>
>
>
> On Wed, Apr 23, 2008 at 3:13 AM, Dirkheld <dirk.bollen_at_soc.kuleuven.be>
> wrote:
>
> >
> > Hi,
> >
> > I have loaded a dataset in R :
> > data =
> >
> > label freq1 freq2
> > news 54 35
> > fun 37 21
> > milk 19 7
> > food 3 3
> > .... etc
> >
> > And I have a vector
> > flist<-c("fun","food")
> >
> > Now I want to use the vector 'flist' for selecting these values from
> > 'data'
> > so that I get the following dataset :
> > label freq1 freq2
> > fun 37 21
> > food 3 3
> >
> > When I do 'data$label==flist[1]' I get 'F T F F', so it works for one
> > item
> > in the char vector flist.
> > But, when I do 'data$label==flist' I get 'F F F F' while I expected 'F T
> > F
> > T'. It seems that I can't perform this action with a vector of
> > charstrings?
> >
> > Is there an other way to do so?
> >
> > --
> > View this message in context:
> > http://www.nabble.com/select-rows-from-data-based-on-a-vector-of-char-strings-tp16832735p16832735.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.
> >
>
>
>

        [[alternative HTML version deleted]]



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. Received on Thu 24 Apr 2008 - 00:38:18 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Thu 24 Apr 2008 - 01:30:33 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive