On Fri, 2011-07-15 at 07:34 -0700, Dennis Murphy wrote:
> Re Prof. Voelkel's recent posts:
>
> (1) Quoting does not work well in data.table; this is mentioned in
> several of the FAQs. Apropos to this discussion, some of the relevant
> ones include 1.2, 1.6 and 2.1; there may be others :)
For the archives, quoting works very well (in general) in data.table :-)
It is a deliberate design feature and we like it working that way, which
those FAQs explain. Having said that, a bug fix has been made in
v1.6.3 :
o Mistakenly wrapping a j expression inside quotes; e.g.,
DT[,list("sum(a),sum(b)"),by=grp]
was appearing to work, but with wrong column names. This
now returns a character column (the quotes should not
be used). Thanks to Joseph Voelkel for reporting.
Will follow up the remainder of the thread at the end later.
Matthew
_______________________________________________
datatable-help mailing list
[email protected]
https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
