[R] Take a levels

From: Muhammad Subianto <subianto_at_gmail.com>
Date: Wed 27 Apr 2005 - 22:21:34 EST


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



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