Message-ID: <ada159b4e0f01251233826da8cafe38e@mail.nih.gov>
Date: 2005-04-27T12:32:00Z
From: Sean Davis
Subject: Take a levels
In-Reply-To: <3635ddc20504270521800e711@mail.gmail.com>
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