Extension of `data.frame`
Fast melt for data.table
Merge two data.tables
Remove rows with missing values on columns specified
Fill missing values
Convenience operator for checking if an example is not in a set of ele...
Set or get number of threads that data.table should use
Obtain matching indices corresponding to patterns
data.table Printing Options
Makes one data.table from a list of many
Generate run-length type group id
Generate unique row ids within each group
Set attributes of objects by reference
Fast column reordering of a data.table by reference
For use by packages that mimic/divert auto printing e.g. IRkernel and ...
Special symbols
Split data.table into chunks in a list
Subsetting data.tables
Substitute expression
Display 'data.table' metadata
Runs a set of tests.
Test assertions for equality, exceptions and console output
Pretty print of time taken
Address in RAM of a variable
Equality Test Between Two Data Tables
Coerce to data.table
Efficient xts to as.data.table conversion
Fast parallel sort
Convert a data.table to a matrix
Efficient data.table to xts conversion
Assignment by reference
Convenience functions for range subsets.
data.table exported C routines
Faster match of character vectors
Fast CSV writer
Fast row reordering of a data.table by reference
Coalescing missing values
Copy an entire object
S4 Definition for data.table
Enhanced data.frame
Optimisations in data.table
Fast dcast for data.table
Deprecated.
Determine Duplicate Rows
fcase
Fast droplevels
Fast ifelse
Fast overlap joins
Fast rank
Fast and friendly file finagler
Rolling functions
Specify measure.vars via regex or separator
Fast lead/lag for vectors and lists
Grouping Set aggregation for data tables
Integer based date class
Creates a join data.table
First/last item of an object
Number of rows affected by last update
Convenience function for calling grep.
Coerce a data.table to data.frame by reference
Coerce lists and data.frames to data.table by reference
Create key on a data.table
Change or turn off numeric rounding
Set operations for data tables
Data table utilities
Efficient transpose of list
Over-allocation access
strsplit and transpose the resulting list efficiently
Perform update of development version of a package
Fast aggregation of large data (e.g. 100GB in RAM), fast ordered joins, fast add/modify/delete of columns by group using no copies at all, list columns, friendly and fast character-separated-value read/write. Offers a natural and flexible syntax, for faster development.
Useful links