I'd be happy to help. Happy for me to have a look at it? cheers
On Tuesday, 22 December 2015, Arunkumar Srinivasan <[email protected]> wrote: > In the works. I’ve not yet managed to finish. > > require(data.table) > A = data.table(x=1:2, y=3:4) > B = data.table(x=2:3, y=3:4) > > anti-join: > > A[!B, on="x"] # equivalently A[!B, .SD, on="x"] > > semi-join: > > A[B, .SD, nomatch=0L, on="x"] > > -- > Arun > > On 21 December 2015 at 17:09:22, statquant3 ([email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>) wrote: > > Hello, is there a join vignette for data.table ? > I realize that I am now more and more using dplyr just for semi_join and > anti_join. > Is there any plan to write those sugar function ? > Happy to do it here and get feedback. > > C. > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/join-vignette-for-data-table-tp4715792.html > Sent from the datatable-help mailing list archive at Nabble.com. > _______________________________________________ > datatable-help mailing list > [email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');> > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help > >
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