Hi Murray,
Thanks a lot . For things to work Its good enough . Its working
Thanks,
Sandip
On Mon, Mar 31, 2014 at 5:04 PM, Murray Stokely <mur...@stokely.org> wrote:
> The simplest case would be:
>
> int num_rows = Rf_length(VECTOR_ELT(dataframe, 0));
> int num_columns = Rf_length(dataframe);
>
> There may be edge cases for which this doesn't work; would need to
> look into how the dim primitive is implemented to be sure.
>
> - Murray
>
>
> On Mon, Mar 31, 2014 at 4:40 PM, Sandip Nandi <sanna...@umail.iu.edu>
> wrote:
> > Hi ,
> >
> > Is there any C API to the R API nrow of dataframe ?
> >
> > x<- data.frame()
> > n<- nrow(x)
> > print(n)
> > 0
> >
> >
> > Example :
> > My C function which deals with data frame looks like and I don't to send
> > the number of rows of data frame .I want to detect it from the function
> > itself, my function take data frame as argument and do some on it. I want
> > API equivalent to nrow. I tried Rf_nrows,Rf_ncols . No much help.
> >
> > SEXP writeRR(SEXP dataframe) {
> >
> > }
> >
> >
> > Any help is very appreciated.
> >
> > Thanks,
> > Sandip
> >
> > [[alternative HTML version deleted]]
> >
> > ______________________________________________
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> > https://stat.ethz.ch/mailman/listinfo/r-devel
>
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