To me too, Matthew. However, I'll benchmark Aaron solution against MadScone solution (achieved through reshape package).
In the meanwhile I continue to investigate a way to implement this solution for data.table matrices. Bye, -- View this message in context: http://r.789695.n4.nabble.com/Join-and-sum-not-compatible-matrices-through-data-table-tp4650882p4650915.html Sent from the datatable-help mailing list archive at Nabble.com. _______________________________________________ datatable-help mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
