Also reshape() will work:
adat<-data.frame(Year=rep(2004,3),Route=rep(123,3),
Point=c("123-1","123-2","123-10"),Sp1=c(0,0,1),
Sp2=c(1,1,1),Sp3=c(0,1,0))
reshape(adat, varying=4:6, v.name="Sp-value",
times=c("Sp1", "Sp2", "Sp3"), idvar="Point",
timevar="Sp-name", direction="long")
----------------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77843-4352
> -----Original Message-----
> From: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
> project.org] On Behalf Of Jim Lemon
> Sent: Saturday, October 06, 2012 7:36 PM
> To: agoijman
> Cc: r-help@r-project.org
> Subject: Re: [R] Presence/ absence data from matrix to single column
>
> On 10/07/2012 01:03 AM, agoijman wrote:
> > I've been trying to reshape this database but haven't succeed at it.
> I tried
> > using loops but can't get it right. I just want to reshape my
> database from
> > this matrix, to the one below, with only one column of data.
> >
> > Year Route Point Sp1 Sp2 Sp3
> > 2004 123 123-1 0 1 0
> > 2004 123 123-2 0 1 1
> > 2004 123 123-10 1 1 0
> >
> > What I want:
> >
> > Year Route Point
> > 2004 123 123-1 Sp1 0
> > 2004 123 123-2 Sp1 0
> > 2004 123 123-10 Sp1 1
> > 2004 123 123-1 Sp2 1
> > 2004 123 123-2 Sp2 1
> > 2004 123 123-10 Sp2 1
> > 2004 123 123-1 Sp3 0
> > 2004 123 123-2 Sp3 1
> > 2004 123 123-10 Sp3 0
> >
> >
> Hi agoijman,
> You can do this using the rep_n_stack function.
>
> adat<-data.frame(Year=rep(2004,3),Route=rep(123,3),
> Point=c("123-1","123-2","123-10"),Sp1=c(0,0,1),
> Sp2=c(1,1,1),Sp3=c(0,1,0))
> library(prettyR)
> rep_n_stack(adat,c("Sp1","Sp2","Sp3"),
> stack.names=c("Sp-names","Sp-values"))
>
> Jim
>
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-
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> and provide commented, minimal, self-contained, reproducible code.
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