data.table v1.6.3
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Extension of data.frame for fast indexing, fast ordered joins and fast grouping.
Enhanced data.frame. Fast indexing, fast ordered joins and
fast grouping 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.
Functions in data.table
| Name | Description | |
| J | Creates a Join data table | |
| all.equal | Equality Test Between Two Data Tables | |
| like | Convenience function for calling regexpr. | |
| tables | Display all objects of class 'data.table' | |
| between | Convenience function for range subset logic. | |
| data.table-class | S4 Definition for data.table | |
| duplicated | Determine Duplicate Rows | |
| transform.data.table | Data table utilities | |
| last | Last item of an object | |
| setkey | Create key on a data table | |
| IDateTime | Integer based date class | |
| merge | Merge Two Data Tables | |
| timetaken | Pretty print of time taken | |
| test.data.table | Runs a set of tests. | |
| data.table | Enhanced data.frame | |
| No Results! | ||
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Details
| License | GPL |
| URL | http://datatable.r-forge.r-project.org/, http://rwiki.sciviews.org/doku.php?id=packages:cran:data.table, http://www.inside-r.org/packages/cran/data.table |
| BugReports | https://r-forge.r-project.org/tracker/?group_id=240 |
| Packaged | 2011-08-04 01:32:50 UTC; mdowle |
| Repository | CRAN |
| Date/Publication | 2011-08-04 11:28:47 |
| depends | base (>= 2.12.0) , R (>= 2.12.0) |
| suggests | chron , ggplot2 , plyr , testthat (>= 0.4) |
| imports | methods |
| Contributors | T Short, S Lianoglou, M Dowle |
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