Dear all, How can I take a levels from a dataset. For example, data(iris) x.iris <- iris[,1:4] y.iris <- iris[,5]> y.iris[1] setosa setosa setosa setosa setosa setosa [7] setosa setosa setosa setosa setosa setosa .... [139] virginica virginica virginica virginica virginica virginica [145] virginica virginica virginica virginica virginica virginica Levels: setosa versicolor virginica I want like, y.iris level are, [] setosa versicolor virginica Best regards, Muhammad Subianto
On Apr 27, 2005, at 8:21 AM, Muhammad Subianto wrote:> Dear all, > How can I take a levels from a dataset. > For example, > > data(iris) > x.iris <- iris[,1:4] > y.iris <- iris[,5] >> y.iris > [1] setosa setosa setosa setosa setosa setosa > [7] setosa setosa setosa setosa setosa setosa > .... > [139] virginica virginica virginica virginica virginica virginica > [145] virginica virginica virginica virginica virginica virginica > Levels: setosa versicolor virginica > > I want like, > y.iris level are, > [] setosa versicolor virginica >Muhammad, See ?unique and ?factor. Sean
Well... did you look at the help page on factors??? Did you even make a search? The answer is within your question:> levels(iris[,5])[1] "setosa" "versicolor" "virginica" Eric> -----Original Message----- > From: r-help-bounces at stat.math.ethz.ch > [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of > Muhammad Subianto > Sent: mercredi 27 avril 2005 14:22 > To: R-help at stat.math.ethz.ch > Subject: [R] Take a levels > > > Dear all, > How can I take a levels from a dataset. > For example, > > data(iris) > x.iris <- iris[,1:4] > y.iris <- iris[,5] > > y.iris > [1] setosa setosa setosa setosa setosa setosa > [7] setosa setosa setosa setosa setosa setosa > .... > [139] virginica virginica virginica virginica virginica > virginica [145] virginica virginica virginica virginica > virginica virginica > Levels: setosa versicolor virginica > > I want like, > y.iris level are, > [] setosa versicolor virginica > > Best regards, > Muhammad Subianto > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html >
probably you want:
levels(y.iris)
I hope it helps.
Best,
Dimitris
----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven
Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/336899
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat/
http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm
----- Original Message -----
From: "Muhammad Subianto" <subianto at gmail.com>
To: <R-help at stat.math.ethz.ch>
Sent: Wednesday, April 27, 2005 2:21 PM
Subject: [R] Take a levels
> Dear all,
> How can I take a levels from a dataset.
> For example,
>
> data(iris)
> x.iris <- iris[,1:4]
> y.iris <- iris[,5]
>> y.iris
> [1] setosa setosa setosa setosa setosa setosa
> [7] setosa setosa setosa setosa setosa setosa
> ....
> [139] virginica virginica virginica virginica virginica
> virginica
> [145] virginica virginica virginica virginica virginica
> virginica
> Levels: setosa versicolor virginica
>
> I want like,
> y.iris level are,
> [] setosa versicolor virginica
>
> Best regards,
> Muhammad Subianto
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html
>