[R] How to add rowSums into list?

[Lauri Nikkinen]

Thanks, one further question: how to order these matrices using these row sums?

lapply(a, function(x) order(x[,5])) #produces only indeces

-Lauri

2008/1/11, Henrique Dallazuanna <wwwhsd at gmail.com>:
> lapply(a, addmargins, 2)
>
> On 11/01/2008, Lauri Nikkinen <lauri.nikkinen at iki.fi> wrote:
> > Hi R-users,
> >
> > I have a list
> >
> > a <- list(one=matrix(rnorm(20), 5, 4), two=matrix(rnorm(20, 3, 0.5),5,4))
> >
> > How to add rowSums (calculated using lapply) to corresponding matrix
> > in this list
> >
> > lapply(a, function(x) rowSums(x))
> >
> > ??
> >
> > -Lauri
> >
> > ______________________________________________
> > R-help at 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.
> >
>
>
> --
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>