[R] Importint stata file and using value labels

PIKAL Petr petr.pikal at precheza.cz
Fri Aug 26 09:11:11 CEST 2016


Hi

You can use

as.numeric(sex)

to get numeric values for factor variable. This is sometimes handy for plotting.

However if you throw away labels how do you know what naumber belongs to which factor level?

Cheers
Petr

> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Juan
> Ceccarelli Arias
> Sent: Thursday, August 25, 2016 9:15 PM
> To: ruipbarradas at sapo.pt
> Cc: r-help at r-project.org
> Subject: Re: [R] Importint stata file and using value labels
>
> Mmm...The other option working with  R for importing the dta file but
> obtaining the values and deleting or ignoring the value labels.
> I think some time ago i did that, but now i can't remember it.
>
>
> On Thu, Aug 25, 2016 at 4:11 PM, <ruipbarradas at sapo.pt> wrote:
>
> > So you should do
> >
> > table(region[sex=="Hombre"],type[sex=="Hombre"]
> >
> > Rui Barradas
> >
> >
> > Citando Juan Ceccarelli Arias <jfca283 at gmail.com>:
> >
> > str(sex)
> >>>
> >>  Factor w/ 2 levels "Hombre","Mujer": 1 2 2 1 2 2 1 1 1 1 ...
> >>   On Thu, Aug 25, 2016 at 1:42 PM, <ruipbarradas at sapo.pt> wrote:
> >>
> >>> _Maybe sex is a factor and Man its label. Factors are coded
> >>> internally as integers, to see it use
> >>>
> >>> str(sex)
> >>>
> >>> Rui Barradas
> >>>  _
> >>>
> >>> _Citando Juan Ceccarelli Arias <jfca283 at gmail.com>:_
> >>>
> >>> _Nop. I didn't work. But using the following it does work.
> >>>> table(region[sex=="Men"],type[sex=="Men"])_
> >>>> _When i use the dta file with stata i declare the condition with
> >>>> sex==1 and not sex=="Man"._ _  _ _On Thu, Aug 25, 2016 at 12:39 PM,
> >>>> <ruipbarradas at sapo.pt> wrote: _
> >>>>
> >>>>> __Hello,
> >>>>>
> >>>>> Try instead
> >>>>>
> >>>>> table(region[sex==1],type[sex=_=1])
> >>>>>
> >>>>> To test for equality use == not =.
> >>>>>
> >>>>> Hope this helps,
> >>>>>
> >>>>> Rui Barradas
> >>>>>  _
> >>>>>
> >>>>> __Citando Juan Ceccarelli Arias <jfca283 at gmail.com>:__
> >>>>>
> >>>>> _ _
> >>>>>> __Hi
> >>>>>> Im a bit lost.
> >>>>>> Ive imported a stata13 file. When i try to make a simple
> >>>>>> table(region[sex=1],type[sex=_1]) i get something as
> >>>>>>           type1 type2
> >>>>>> region1 0 0
> >>>>>> region2 0 0
> >>>>>> region3 0 0
> >>>>>>
> >>>>>> I don't know how to operate with the value labels.
> >>>>>> Sex is defined as 1 as "Man" and 2 as "Female".
> >>>>>> And region1 is 1, region2 is 2 and so on.
> >>>>>> So, how can i make reference to the value and not the value
> >>>>>> labels when i write down some condition or statement ?
> >>>>>> I know is simple, but using the help for readstata13 didn't
> >>>>>> clarify it to me.
> >>>>>> Thanks for your help and time.
> >>>>>>  _
> >>>>>>
> >>>>>> __        [[alternative HTML version deleted]]
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> >>>>>> https://stat.ethz.ch/mailman/listinfo/r-help
> >>>>>> PLEASE do read the posting guide http://www.R-project.org/posti
> >>>>>> ng-guide.htmland provide commented, minimal, self-contained,
> >>>>>> reproducible code. _ _ _ _ _
> >>>>>>
> >>>>>
> >>>>> __ __
> >>>>>
> >>>>
> >>>> _ _
> >>>> _ _
> >>>>
> >>>
> >>> _ _
> >>>
> >>
> >
> >
> >
>
>       [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.

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