[Rd] Need help on calling Head from C
Simon Urbanek
simon.urbanek at r-project.org
Thu Jun 26 09:50:54 CEST 2014
On Jun 25, 2014, at 11:31 PM, Sandip Nandi <sannandi at 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]]
>
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