Define them as factors with a specified order for your sorting.
e.g.
x <- factor(your_data, levels = c('c', 'b','d', 'a'))
On Thu, Jan 10, 2013 at 1:21 PM, array chip <arrayprof...@yahoo.com> wrote:
> Hi I have a character matrix with 2 columns A and B, If I want to sort the
> matrix based on the column B, but based on a specific order of characters:
>
> mat<-cbind(c('w','x','y','z'),c('a','b','c','d'))
> ind<-c('c','b','d','a')
>
> I want "mat" to be sorted by the sequence in "ind":
>
> [,1] [,2]
> [1,] "y" "c"
> [2,] "x" "b"
> [3,] "z" "d"
> [4,] "w" "a"
>
> Is there any simple function that can do this?
>
> Thanks
>
> John
>
> [[alternative HTML version deleted]]
>
>
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>
--
Jim Holtman
Data Munger Guru
What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.
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