[R] cast in reshape and reshape2

Hadley Wickham hadley at rice.edu
Sat Dec 24 03:23:17 CET 2011

>> Have you looked at the .summarise argument to dcast? That seems to deliver
>> the same sort of results one gets with base::aggregate.
> Actually I see after looking at examples on the plyr-reshape-googlegroups
> group that it is not '.summarise' but rather 'summarise'. Unfortunately
> there are no links in the help pages that seem to describe its proper use
> ... a not uncommon failing for that package in my experience.

?plyr::summarise seems pretty helpful to me.  If you can do better,
please submit a patch - they are very much appreciated.


Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University

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