Re: [R] delete a row from a matrix

From: ecoinfo <ecoinformatics_at_gmail.com>
Date: Wed 13 Jul 2005 - 20:08:08 EST

Hi,
May I ask a related question, how to insert a row/column to a matrix?  Thanks
Xiaohua

 On 13 Jul 2005 11:38:30 +0200, Peter Dalgaard <p.dalgaard@biostat.ku.dk> wrote:
>
> Navarre Sabine <navarre_sabine@yahoo.fr> writes:
>
> > Hi,
> > I would like to know if it's possible to delete a rox from a matrix?
> >
> > > fig
> > [,1] [,2] [,3] [,4]
> > [1,] 0 1 0.0 0.2
> > [2,] 0 1 0.2 0.8
> > [3,] 0 1 0.8 1.0
> > [4,] 0 1 NA NA
> > [5,] 0 1 NA NA
> >
> > I would like to delete the 2 rows with NA!
>
> fig <- fig[-c(4,5),]
>
> or, more generally
>
> fig <- fig[complete.cases(fig),]
>
> or, even more generally
>
> fig <- fig[!apply(is.na(fig), 1, any),]
>
> --
> O__ ---- Peter Dalgaard ุster Farimagsgade 5, Entr.B
> c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
> (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
> ~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk) FAX: (+45) 35327907
>
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Received on Wed Jul 13 20:34:57 2005

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