[R] Sorting

[baptiste auguie]

yet another way,

> x <- read.table(textConnection("Category     Value
+  b                1
+  b                2
+  a                7
+  a                1"), header=TRUE)
> y = transform(x, Category = relevel(Category, c("b")))
> str(y)
'data.frame':	4 obs. of  2 variables:
 $ Category: Factor w/ 2 levels "b","a": 1 1 2 2
 $ Value   : int  1 2 7 1

HTH,

baptiste

2009/9/23 Chris Li <chrisli at austwaterenv.com.au>:
>
> Hello,
>
> Say I have a dataset as followed:
>
> Category     Value
> b                1
> b                2
> a                7
> a                1
>
> Then, if I:
>
> levels(Category)
>
> It will return:
> [a], [b]
>
> But I want to keep the original order, i.e.:
> [b], [a]
>
> Is it possible to do it in R?
>
> Thanks in advance!
>
> Chris
> --
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