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data.table (version 1.8.8)

Extension of data.frame for fast indexing, fast ordered joins, fast assignment, fast grouping and list columns.

Description

Enhanced data.frame. Fast indexing, fast ordered joins, fast assignment, fast grouping and list columns in a short and flexible syntax. i and j may be expressions of column names directly, for faster development. Example: X[Y] is a fast join for large data.

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Install

install.packages('data.table')

Monthly Downloads

845,520

Version

1.8.8

License

GPL (>= 2)

Maintainer

Last Published

March 6th, 2013

Functions in data.table (1.8.8)