When I use `plyr`/`dplyr`

My last post I talked about how I use the data.table package for aggregating and removing duplicate observations. Although I use the data.table package quite often, there are many times when I use plyr (and now the new dplyr) package, primarily because of its easy, intuitive syntax. Arrange One of my personal favorite functions in the plyr suite of basic functions is the arrange function. The base functions for sorting/ordering are more difficult to use.


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