Department of Biostatistics Seminar/Workshop Series

R - When Fast is Slow and Slow is Fast

Cole Beck

Computer Systems Analyst, Department of Biostatistics

Vanderbilt University School of Medicine

This seminar will introduce a few methods for faster data set aggregation. An experienced R user will be familiar with the tapply and aggregate functions, as well as iterating over the output of split. These methods may be difficult to learn, and worse, suffer from slow performance. It may be worth investing the time into some R packages.This discussion will give an overview of data.table, dplyr, inline and Rcpp.
Topic revision: r1 - 25 Feb 2015, AshleeBartley

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