data.table v1.7.8
0
Monthly downloads
Extension of data.frame for fast indexing, fast ordered joins, fast assignment, fast grouping and list columns.
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.
Functions in data.table
| Name | Description | |
| IDateTime | Integer based date class | |
| between | Convenience function for range subset logic. | |
| data.table-class | S4 Definition for data.table | |
| timetaken | Pretty print of time taken | |
| J | Creates a Join data table | |
| test.data.table | Runs a set of tests. | |
| setkey | Create key on a data table | |
| := | Assignment by reference | |
| like | Convenience function for calling regexpr. | |
| duplicated | Determine Duplicate Rows | |
| tables | Display all objects of class 'data.table' | |
| last | Last item of an object | |
| subset.data.table | Subsetting data.tables | |
| truelength | Over-allocation access | |
| merge | Merge Two Data Tables | |
| all.equal | Equality Test Between Two Data Tables | |
| transform.data.table | Data table utilities | |
| data.table | Enhanced data.frame | |
| No Results! | ||
Last month downloads
Details
| License | GPL (>= 2) |
| URL | http://datatable.r-forge.r-project.org/, http://rwiki.sciviews.org/doku.php?id=packages:cran:data.table, http://crantastic.org/packages/data.table |
| BugReports | https://r-forge.r-project.org/tracker/?group_id=240 |
| Packaged | 2012-01-25 06:04:35 UTC; mdowle |
| Repository | CRAN |
| Date/Publication | 2012-01-25 07:53:47 |
| depends | base (>= 2.12.0) , R (>= 2.12.0) |
| suggests | chron , ggplot2 , hexbin , plyr , testthat (>= 0.4) |
| imports | methods |
| Contributors | T Short, S Lianoglou, M Dowle |
Include our badge in your README
[](http://www.rdocumentation.org/packages/data.table)