[datatable-help] misc join questions

[Steve Lianoglou]

Ugh, sorry -- I mistakenly said that the latest version of data.table
is 1.5.3  which is incorrect, it's 1.6.

-steve

On Wed, Jun 1, 2011 at 2:29 PM, Steve Lianoglou
<mailinglist.honeypot at gmail.com> wrote:
> Hi,
>
> I'm a bit cramped for time right now, so I can't comment on all your
> points, but:
>
>
> On Wed, Jun 1, 2011 at 1:40 PM, Johann Hibschman <jhibschman+r at gmail.com> wrote:
> [snip]
>
>> Alternatively, since I'm used to the merge.data.frame syntax, if we
>> could expand merge.data.table to allow "merge(x, y, by="date",
>> all.x=TRUE)" for arbitrary data tables, creating keys as needed, that
>> would also help.  Perhaps add a "autokey.x" option to enable the
>> creation of needed keys.
>
> It actually does this already -- you can pass in your own column names
> to act as keys for the merge operation.
>
> Is that not working for you? Are you using the latest version of
> data.table (1.5.3)?
>
> If the answers to the two questions above are "no" and "yes"
> (respectively), then there is likely a bug ... please let me know.
>
> -steve
>
> --
> Steve Lianoglou
> Graduate Student: Computational Systems Biology
>  | Memorial Sloan-Kettering Cancer Center
>  | Weill Medical College of Cornell University
> Contact Info: http://cbio.mskcc.org/~lianos/contact
>



-- 
Steve Lianoglou
Graduate Student: Computational Systems Biology
 | Memorial Sloan-Kettering Cancer Center
 | Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact