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Version

Install

install.packages('data.table')

Monthly Downloads

999,142

Version

1.10.4-2

License

GPL-3 | file LICENSE

Maintainer

Last Published

October 12th, 2017

Functions in data.table (1.10.4-2)

as.data.table

Coerce to data.table
as.data.table.xts

Efficient xts to as.data.table conversion
between

Convenience functions for range subsets.
chmatch

Faster match of character vectors
address

Address in RAM of a variable
all.equal

Equality Test Between Two Data Tables
IDateTime

Integer based date class
J

Creates a Join data table
as.xts.data.table

Efficient data.table to xts conversion
:=

Assignment by reference
dcast.data.table

Fast dcast for data.table
copy

Copy an entire object
first

First item of an object
foverlaps

Fast overlap joins
fsort

Fast parallel sort
fwrite

Fast CSV writer
data.table-package

Enhanced data.frame
datatable.optimize

Optimisations in data.table
patterns

Obtain matching indices corresponding to patterns
print.data.table

data.table Printing Options
setattr

Set attributes of objects by reference
data.table-class

S4 Definition for data.table
last

Last item of an object
like

Convenience function for calling regexpr.
setDT

Coerce lists and data.frames to data.table by reference
setcolorder

Fast column reordering of a data.table by reference
split

Split data.table into chunks in a list
subset.data.table

Subsetting data.tables
transpose

Efficient transpose of list
truelength

Over-allocation access
duplicated

Determine Duplicate Rows
na.omit.data.table

Remove rows with missing values on columns specified
setDTthreads

Set or get number of threads that data.table should use
setkey

Create key on a data table
setops

Set operations for data tables
frank

Fast rank
fread

Fast and friendly file finagler
melt.data.table

Fast melt for data.table
setNumericRounding

Change or turn off numeric rounding
tables

Display all objects of class 'data.table'
test.data.table

Runs a set of tests.
rbindlist

Makes one data.table from a list of many
rleid

Generate run-length type group id
timetaken

Pretty print of time taken
transform.data.table

Data table utilities
merge

Merge two data.tables
rowid

Generate unique row ids within each group
setDF

Coerce a data.table to data.frame by reference
setorder

Fast row reordering of a data.table by reference
shift

Fast lead/lag for vectors and lists
tstrsplit

strsplit and transpose the resulting list efficiently
shouldPrint

For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
special-symbols

Special symbols