Thank you Peter it works!!!
________________________________
À : r-help@r-project.org
Envoyé le : Lundi, 10 Août 2009, 16h13mn 02s
Objet : [R] extraction of elements in a matrice???
i have a matrice M and i want to extract only rows where GWP_Max is positif and
smaller than 1000 but it is given me this:!!!???
> M
Policy.Number GWP_Max
1 4001023 500
2 4001025 700
3 4001028 600
4 4001062 2335.1
5 6100001 2000
6 1060000006 1400
7 1060000009 77.19
8 1060000071 18898.88
9 1060000073 671.70015
10 1060000077 18898.88
11 1060000077 18898.88
12 1060000124 93541.87
> M[M[,2]> 0,]
Policy.Number GWP_Max
NA NA <NA>
NA.1 NA <NA>
NA.2 NA <NA>
NA.3 NA <NA>
NA.4 NA <NA>
NA.5 NA <NA>
NA.6 NA <NA>
NA.7 NA <NA>
NA.8 NA <NA>
NA.9 NA <NA>
NA.10 NA <NA>
NA.11 NA <NA>
Warning message:
In Ops.factor(M[, 2], 0) : > not meaningful for factors
>
[[elided Yahoo spam]]
thank you a lot
Regards
[[alternative HTML version deleted]]
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
