[R] how to view the top 20 lines in a long dataset

[Felipe Carrillo]

is this what you want?

head(yourdataset,20)
 
Felipe D. Carrillo
Supervisory Fishery Biologist
Department of the Interior
US Fish & Wildlife Service
California, USA



----- Original Message ----
> From: Louis Plough <lplough at usc.edu>
> To: r-help at r-project.org
> Sent: Mon, November 1, 2010 12:40:19 PM
> Subject: [R] how to view the top 20 lines in a long dataset
> 
> Hi,
> I am simply looking for the function that will allow you to look at the top
> 20 lines of a long dataset?
> 
> LP
> 
> 
> On Mon, Nov 1, 2010 at 10:46 AM, Louis Plough <lplough at usc.edu> wrote:
> 
> > Hi,
> > I am trying to generate all possible permutations (choose 2) of a vector,
> > b, for example--using 'combn' the combinations in only one direction are
> > generated...
> >
> > > b<-c(.1,.2,.3)
> > > combn(b,2)
> >      [,1] [,2] [,3]
> > [1,]  0.1  0.1  0.2
> > [2,]  0.2  0.3  0.3
> >
> >                        [1,] 0.1  0.2  0.3  0.2  0.3  0.3        These
> > should also be there.
> >                        [2,] 0.1  0.2  0.3  0.1  0.1  0.2
> >
> > Is there another R function that can do this??
> >
> > Thanks,
> > Louis
> >
> 
>     [[alternative HTML version deleted]]
> 
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