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Juan Natera - Highlights of useR conference - L...
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Data Science LA
September 06, 2014
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Juan Natera - Highlights of useR conference - LA R meetup - Sep 2014
Data Science LA
September 06, 2014
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Transcript
A short introduction to dplyr Juan Natera Los Angeles R
Meetup 09/04/2014
A bit about me • Software Engineer • Interested in
R and its use for gaining insights about data • Open Source enthusiast • Baseball fanatic
About dplyr • Developed by Hadley Wickham, Chief Scientist @
Rstudio. • Part of a suite of packages meant to facilitate working on the “data pipeline”.
Why? • People spend a lot of time getting data
ready for analysis • Almost no learning curve (just need to learn 5 verbs) • Improves readability • It's FAST
The data pipeline Tidy Transform Model Visualize
The 5 verbs • flter: remove rows • select: choose
columns • arrange: reorder rows • mutate: change data • summarize: guess...
No learning curve, how? • First parameter is always a
data.frame • Other parameters describe what you want to do with it. • Always returns a new data.frame
It's Fast
Let's see some code!
A great book I picked up at useR 2014
Questions or Comments? naterajj@gmail.com