On 21 Dec 2004 at 12:46, Philippe Hup?? wrote:
> I am trying to use the function aggregate with the median function but
> I get the following error:
>
> Error in FUN(X[[1]], ...) : Argument "INDEX"
>
> When I replace median by mean, it works perfectly
Hi Philippe
I suppose that you have some typo in your aggregate construction
or you redefined median.
> aggregate(x, list(rrr), mean)
Group.1 x
1 1 -0.19455580
2 2 -0.06877719
3 3 -0.47657192
4 4 -0.41082682
5 5 1.27739323
6 6 1.15004620
7 7 -0.40064292
8 8 -0.02360514
9 9 -0.24954037
10 10 0.13480356
11 11 0.24179472> aggregate(x, list(rrr), median)
Group.1 x
1 1 -0.19455580
2 2 -0.06877719
3 3 -0.47657192
4 4 -0.41082682
5 5 1.27739323
6 6 1.15004620
7 7 -0.40064292
8 8 -0.02360514
9 9 -0.24954037
10 10 0.13480356
11 11 0.24179472
Works for me as supposed. Or do you do something completely
defferent?
Cheers
Petr
>
> Can someone tell me where the problem comes from?
>
> Thx
>
>
> I am running R 2.0.0 on SunOS 5.9
>
> --
> Philippe Hup??
> UMR 144 - Service Bioinformatique
> Institut Curie
> Laboratoire de Transfert (4??me ??tage)
> 26 rue d'Ulm
> 75005 Paris - France
>
> Email : Philippe.Hupe at curie.fr
> T??l : +33 (0)1 44 32 42 75
> Fax : +33 (0)1 42 34 65 28
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html
Petr Pikal
petr.pikal at precheza.cz