Mapping Flows in R … with data.table and lattice

(This article was first published on Omnia sunt Communia! » R-english, and kindly contributed to R-bloggers)

Some days ago James Cheshire published the post Mapping Flows in R. I have implemented an alternative (faster) version using data.table to read and join the datasets (and lattice to display the results). If you are new to data.table you should read this wiki and this cheatsheet.

This is the code:

This is the result:

london

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