It is very weird to me, why he doesn't use more of tidyr and dplyr. Those are wonderful packages. The whole part of changing types of data frame, would become single call to `mutate` from dplyr package.
There is great blog [0] post explaining working with those tools. What is most important here, is that dplyr and tidyr makes data organization and analysis concise, effecient and readable way.
There is great blog [0] post explaining working with those tools. What is most important here, is that dplyr and tidyr makes data organization and analysis concise, effecient and readable way.
[0] http://zevross.com/blog/2015/01/13/a-new-data-processing-wor...