Hi Jens,
If the matrix you described is m.
Then, you can do
> unique(as.vector(m))
[1] 0.1 2.0 0.0 3.0 50.0 1.0 100.0
> order(unique(as.vector(m)))
[1] 3 1 6 2 4 5 7
Hope this helps :)
Naira
Jens Oldeland wrote:
Dear All,
a short and maybe simple question:
I have to rank all values in a matrix from 0 to X,
[1] [2] [3] [4]
[1] 0.1 2 0 3
[2] 50 3 3 1
[3] 100 1 1 0
[4] 100 2 2 0
0->0
0.1->1
2->2
3->3
50->4
100->5 (X=5)
is there any function for this? i have looked in several packages
(vegan, labdsv etc.) because I am working with species by site tables,
but without success. perhaps I looked for the wrong terms (rank matrix
etc.)
thank you for your help
regards,
Jens
--
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Naira Naouar
Tel:+32 (0)9 331 38 63
VIB Department of Plant Systems Biology, Ghent University
Technologiepark 927, 9052 Gent, BELGIUM
[EMAIL PROTECTED] http://www.psb.ugent.be
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