vroom

 vroom

File import in R could be considered a solved problem, with multiple widely used packages (data.table, readr, and others) providing fast, robust import of common formats in addition to the functions available in base R.

However I feel there is still room for improvement in existing approaches. vroom is able to index and then query multi-Gigabyte files, including those with categorical, text and temporal data, in near real-time. This is a huge boon for interactive data analysis as you can jump directly into exploratory analysis without sampling or long waits for full import. vroom leverages the Altrep framework introduced in R 3.5 along with lazy, just-in-time parsing of the data to provide this improved latency without requiring changes to existing data manipulation code.

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Jim Hester

July 12, 2019
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