Extension of data.frame for fast indexing, fast ordered joins, fast assignment, fast grouping and list columns CRAN Task View: Finance (http://CRAN.R-project.org/view=Finance) CRAN Task View: HighPerformanceComputing (http://CRAN.R-project.org/view=HighPerformanceComputing) 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. Software Depends: R (>= 2.12.0) Imports: methods Suggests: chron, ggplot2 (>= 0.9.0), plyr, reshape, testthat (>= 0.4), hexbin, fastmatch, nlme M Dowle <datatable-help@lists.r-forge.r-project.org> M Dowle, T Short, S Lianoglou GPL (>= 2) 2012-03-26 application/tgz http://CRAN.R-project.org/package=data.table