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Version

Install

install.packages('data.table')

Monthly Downloads

891,324

Version

1.11.4

License

MPL-2.0 | file LICENSE

Maintainer

Last Published

May 27th, 2018

Functions in data.table (1.11.4)

merge

Merge two data.tables
melt.data.table

Fast melt for data.table
datatable.optimize

Optimisations in data.table
dcast.data.table

Fast dcast for data.table
last

Last item of an object
like

Convenience function for calling regexpr.
frank

Fast rank
foverlaps

Fast overlap joins
print.data.table

data.table Printing Options
patterns

Obtain matching indices corresponding to patterns
groupingsets

Grouping Set aggregation for data tables
J

Creates a Join data table
fwrite

Fast CSV writer
data.table-class

S4 Definition for data.table
tstrsplit

strsplit and transpose the resulting list efficiently
data.table-package

Enhanced data.frame
copy

Copy an entire object
fread

Fast and friendly file finagler
update.dev.pkg

Perform update of development version of a package
fsort

Fast parallel sort
na.omit.data.table

Remove rows with missing values on columns specified
chmatch

Faster match of character vectors
setDTthreads

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

Split data.table into chunks in a list
rowid

Generate unique row ids within each group
setorder

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

Subsetting data.tables
setDF

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

Fast lead/lag for vectors and lists
setattr

Set attributes of objects by reference
setDT

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

Generate run-length type group id
setNumericRounding

Change or turn off numeric rounding
rbindlist

Makes one data.table from a list of many
setops

Set operations for data tables
setkey

Create key on a data table
shouldPrint

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

Fast column reordering of a data.table by reference
timetaken

Pretty print of time taken
special-symbols

Special symbols
transform.data.table

Data table utilities
tables

Display 'data.table' metadata
test.data.table

Runs a set of tests.
truelength

Over-allocation access
transpose

Efficient transpose of list
all.equal

Equality Test Between Two Data Tables
as.data.table

Coerce to data.table
between

Convenience functions for range subsets.
as.xts.data.table

Efficient data.table to xts conversion
:=

Assignment by reference
as.data.table.xts

Efficient xts to as.data.table conversion
IDateTime

Integer based date class
address

Address in RAM of a variable
as.matrix

Convert a data.table to a matrix
first

First item of an object
duplicated

Determine Duplicate Rows