Good. FR#1634 added. Matthew On Sun, 2011-10-23 at 20:28 -0400, Steve Lianoglou wrote: > I think I'm a +1 on doing the xref (like data.frame does), but > emitting a warning when it is done .. unlike data.frame.rbind, which > just does it silently ... > > -steve > > > On Sun, Oct 23, 2011 at 8:08 PM, Matthew Dowle <[email protected]> wrote: > > Ah. Then I think that was deliberate at the time. I sometimes mislabel > > column names and want R to warn me rather than doing silent cross-ref. > > Other times I just think in terms of column order and am not too > > concerned with the names. I don't mind changing it to do cross ref for > > consistency but would like to keep the warning. Views? > > > > On Sun, 2011-10-23 at 14:35 -0400, Steve Lianoglou wrote: > >> I think he means that running data.frame.rbind on these: > >> > >> R> d1 <- data.frame(a=1:10, b=11:20) > >> R> d2 <- data.frame(b=101:120, a=21:30) > >> R> rbind(d1, d2) > >> > >> Will "cross ref" the "a" and "b" columns and stack them correctly on > >> top of each other. > >> > >> Doing the same with two data.table will bind the two together, but > >> won't do the cross-ref. It just gives you a warning that the names > >> didn't match, but rbind's the first to the first, and the second to > >> the second (columns) anyway. > >> > >> -steve > >> > >> On Sun, Oct 23, 2011 at 2:19 PM, Matthew Dowle <[email protected]> > >> wrote: > >> > Hi. Not sure what you mean, example needed please. Is that with v1.7.1 > >> > now > >> > on CRAN? There has been some to and fro on chind/rbind in last few > >> > versions. > >> > > >> >> Hi Matthew, > >> >> > >> >> Not sure if this is planned or inadvertent, but rbind matches up named > >> >> columns with data.frames but doesn't with data.table (data.table does > >> >> give > >> >> the friendly warning). > >> >> > >> >> Thanks as always for your excellent package, > >> >> > >> >> Damian > >> >> > >> >> > >> >> _______________________________________________ > >> >> datatable-help mailing list > >> >> [email protected] > >> >> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help > >> > > >> > > >> > _______________________________________________ > >> > datatable-help mailing list > >> > [email protected] > >> > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help > >> > > >> > >> > >> > > > > > > > > >
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