[R] getting started, reading listing and saving data

[Thomas Schönhoff]

Again,

2005/11/23, Thomas Schönhoff <tschoenhoff at gmail.com>:
> Hi,
>
> 2005/11/23, Ronnie Babigumira <r.babigumira at gmail.com>:
> > Thomas many thanks,  though str(myobject[ 5:9]) is not what I want, it
> > prompted me to try head(myobject [3:4]) and this gets me really close
> > to what I want, I get the first few observations of variables 3 and 4
> > in my data. What I would like to do however is to do the same thing
> > but with the variable names explicitly (so instead of 3:4 I use
> > something like varname3 and varname4)
> >
> > Any ideas
> >
> > Again, many thanks to all on the list who have helped (I promise I am
> > frantically trying to read up everything I have been given and bring
> > myself upto speed so I will not be consuming bandwidth with a lot of
> > read the manual sort of questions)
> >
> >
> >
> > On 11/23/05, Thomas Schönhoff <tschoenhoff at gmail.com> wrote:
> > > Hello,
> > >
> > > 2005/11/23, Ronnie Babigumira <r.babigumira at gmail.com>:
> > > > Many thanks to Peter Alspach, Jim Porzak and Murray Pung for the help.
> > > > Peter and Jim, head? and tail? was just what I needed to list a few
> > > > observations. Peter, thanks for pointing out str? to me. I totally
> > > > agree with you on its usefulness.
> > > >
> > > > Murray thanks for file > save workspace (and Peters save.image)
> > > > addresses the third of my concerns
> > > >
> > > > One last question related to head and tails, this works best if you
> > > > have a few variables (columns). Given more, how can I use the
> > > > information on the variable names given after str to list the first
> > > > few few observations for a set of variable.
> > > >
> > > > To make it clear. Say I load a dataset with n variables named v1 to
> > > > vn. I use str(mydata) and I get a list of variable names..
> > > >
> > > > str(x)
> > > > v1 ......
> > > > .  ......
> > > > .  ......
> > > > .  ......
> > > > .  ......
> > > > Vn ......
> > > >
> > > > How do i list the first n observations of say v5 to v9

Sorry for the typo, once again:
>
> myobservs  <-str(myobject, myobject$v5[1:n],...,...,... myobject$v9[1:n])
>
> where n = number of observations to be selected.


Thomas