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Version

Install

install.packages('data.table')

Monthly Downloads

1,004,818

Version

1.11.2

License

MPL-2.0 | file LICENSE

Maintainer

Last Published

May 8th, 2018

Functions in data.table (1.11.2)

merge

Merge two data.tables
transform.data.table

Data table utilities
split

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

Fast melt for data.table
setattr

Set attributes of objects by reference
fwrite

Fast CSV writer
last

Last item of an object
rowid

Generate unique row ids within each group
setDF

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

Pretty print of time taken
setcolorder

Fast column reordering of a data.table by reference
subset.data.table

Subsetting data.tables
data.table-package

Enhanced data.frame
shouldPrint

For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
na.omit.data.table

Remove rows with missing values on columns specified
fsort

Fast parallel sort
tstrsplit

strsplit and transpose the resulting list efficiently
update.dev.pkg

Perform update of development version of a package
fread

Fast and friendly file finagler
special-symbols

Special symbols
groupingsets

Grouping Set aggregation for data tables
print.data.table

data.table Printing Options
setorder

Fast row reordering of a data.table by reference
patterns

Obtain matching indices corresponding to patterns
setNumericRounding

Change or turn off numeric rounding
like

Convenience function for calling regexpr.
setDT

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

Set operations for data tables
transpose

Efficient transpose of list
setDTthreads

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

Makes one data.table from a list of many
setkey

Create key on a data table
truelength

Over-allocation access
test.data.table

Runs a set of tests.
shift

Fast lead/lag for vectors and lists
rleid

Generate run-length type group id
tables

Display 'data.table' metadata
as.data.table.xts

Efficient xts to as.data.table conversion
as.xts.data.table

Efficient data.table to xts conversion
all.equal

Equality Test Between Two Data Tables
as.matrix

Convert a data.table to a matrix
between

Convenience functions for range subsets.
J

Creates a Join data table
as.data.table

Coerce to data.table
address

Address in RAM of a variable
:=

Assignment by reference
IDateTime

Integer based date class
chmatch

Faster match of character vectors
frank

Fast rank
duplicated

Determine Duplicate Rows
copy

Copy an entire object
first

First item of an object
dcast.data.table

Fast dcast for data.table
datatable.optimize

Optimisations in data.table
data.table-class

S4 Definition for data.table
foverlaps

Fast overlap joins