Matt, Very impressive show of what data.table can do It would be helpful to have a wider set of these more 'advanced' data.table function calls in the FAQ I keep discovering more features, even after reading the FAQ, R-help and intro vignette multiple times (this is not a criticism of the docs, but praise for DT's flexibility) Learning by example, even if you don't understand it fully the first time, can be very powerful James
On 8 December 2014 at 15:03, Matt Dowle <[email protected]> wrote: > > As a few have asked already, will upload slides later. It was a > collection of different files and part was just an R script. I'll need to > merge together ... > > > On 08/12/14 14:44, Matt Dowle wrote: > >> Hi, >> >> A video of my talk at H2O World in San Francisco recently : >> >> https://www.youtube.com/watch?v=MvH1eTdsekA >> >> 0:00 Examples from two insurance companies using data.table >> 12:00 What is data.table, benchmarks dplyr and pandas >> 16:55 Overlap joins >> 20:00 Rolling joins >> 22:30 data.table radix sorting is better than hashing (dplyr and pandas) >> 23:00 H2O (just parallel file reading and grouping as quick test) >> 30:00 Quick rerun of talk at Bay Area R User Group (sorting benchmark, >> automatic indexes flows through to dplyr, numeric rounding) >> 33:10 My status >> 36:45 Questions >> 49:26 End >> >> Comments/suggestions very welcome. >> >> Matt >> >> >> > _______________________________________________ > datatable-help mailing list > [email protected] > https://lists.r-forge.r-project.org/cgi-bin/mailman/ > listinfo/datatable-help >
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