[R] SORTING Arrays by index value
ripley@stats.ox.ac.uk
ripley at stats.ox.ac.uk
Tue Feb 4 18:15:03 CET 2003
acc.gp.bl.wtmn[sort.list(row.names(acc.gp.bl.wtmn)), ]
I am not clear how you missed order/sort.list, which have examples like
this. It's referenced off ?sort. Indeed, sort() can be used too.
On Tue, 4 Feb 2003, Mark G Orr wrote:
> Hello, I'm somewhat new to R. I've searched the archive for the last year
> and tried to consult the manual pages for the following problem, but did
> not find an answer.
>
> I want to sort an array by the index values. Here is the array
>
> >acc.gp.bl.wtmn
> Gp17 Gp4
> 1 0.5703125 0.6406250
> 10 0.7812500 0.7109375
> 11 0.8046875 0.7343750
> 12 0.8359375 0.7890625
> 13 0.8515625 0.7109375
> 14 0.8281250 0.7343750
> 15 0.8671875 0.7812500
> 16 0.8125000 0.7578125
> 17 0.7734375 0.7500000
> 18 0.8000000 0.7800000
> 19 0.8700000 0.7300000
> 2 0.8046875 0.7265625
> 20 0.8300000 0.7400000
> 21 0.7500000 0.8000000
> 22 0.7700000 0.7600000
> 23 0.8200000 0.7800000
> 24 0.7600000 0.7400000
> 25 0.8100000 0.8000000
> 3 0.7578125 0.7812500
> 4 0.8203125 0.7890625
> 5 0.7890625 0.7421875
> 6 0.7265625 0.7812500
> 7 0.8125000 0.7421875
> 8 0.8515625 0.7265625
> 9 0.8203125 0.6953125
>
> My question is: How do I sort by the first index (the values are 1:25)
> without losing the associated values per index value for the two
> columns(Gp17 and Gp4). I want ascending order (1:25) of the index values.
I think the `first column' is the row names.
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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