Hi ,

I am trying to implement the following from C

> x
  a b
1 1 2
2 3 4

 r<-  head(x,n=1)
> r
  a b
1 1 2

I tried my code , its not working , its not working for the value of the
parameter n

Thanks,
Sandip



On Thu, Jun 26, 2014 at 12:50 AM, Simon Urbanek <simon.urbanek@r-project.org
> wrote:

> On Jun 25, 2014, at 11:31 PM, Sandip Nandi <sannandi@umail.iu.edu> wrote:
>
> > Hi ,
> >
> > I am trying to call head function from C . My doubt is with the parameter
> > n,how to pass it .
> >
> > PROTECT(dfm=lang3(install("data.frame"),df,ScalarLogical(FALSE)));
> > SET_TAG(CDDR(dfm), install("stringsAsFactors")) ;
> > SEXP res = PROTECT(eval(dfm,R_GlobalEnv));
> > PROTECT(head=lang3(install("head"),res,ScalarInteger(1)));
> > head  = PROTECT(eval(head,R_GlobalEnv));
> >
> >
> > I tried the above following , it seemed to be not working . Can you
> please
> > help.
> >
>
> Can you elaborate? The above code works AFAICT ...
>
> Cheers,
> S
>
>
>
> > Thanks
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-devel@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-devel
> >
>
>

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