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Install
install.packages('data.table')
Monthly Downloads
910,276
Version
1.10.4
License
GPL-3 | file LICENSE
Maintainer
Matt Dowle
Last Published
February 1st, 2017
Functions in data.table (1.10.4)
Search all functions
as.xts.data.table
Efficient data.table to xts conversion
data.table-class
S4 Definition for data.table
address
Address in RAM of a variable
as.data.table.xts
Efficient xts to as.data.table conversion
as.data.table
Coerce to data.table
copy
Copy an entire object
:=
Assignment by reference
all.equal
Equality Test Between Two Data Tables
chmatch
Faster match of character vectors
between
Convenience functions for range subsets.
first
First item of an object
fsort
Fast parallel sort
datatable.optimize
Optimisations in data.table
duplicated
Determine Duplicate Rows
frank
Fast rank
dcast.data.table
Fast dcast for data.table
foverlaps
Fast overlap joins
fread
Fast and friendly file finagler
data.table-package
Enhanced data.frame
fwrite
Fast CSV writer
print.data.table
data.table Printing Options
like
Convenience function for calling regexpr.
IDateTime
Integer based date class
merge
Merge two data.tables
J
Creates a Join data table
patterns
Obtain matching indices corresponding to patterns
last
Last item of an object
na.omit.data.table
Remove rows with missing values on columns specified
setDTthreads
Set or get number of threads that data.table should use
melt.data.table
Fast melt for data.table
rowid
Generate unique row ids within each group
rbindlist
Makes one data.table from a list of many
setNumericRounding
Change or turn off numeric rounding
setattr
Set attributes of objects by reference
setops
Set operations for data tables
rleid
Generate run-length type group id
setDT
Coerce lists and data.frames to data.table by reference
setkey
Create key on a data table
setcolorder
Fast column reordering of a data.table by reference
setDF
Coerce a data.table to data.frame by reference
setorder
Fast row reordering of a data.table by reference
shouldPrint
For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
shift
Fast lead/lag for vectors and lists
transpose
Efficient transpose of list
special-symbols
Special symbols
tables
Display all objects of class 'data.table'
truelength
Over-allocation access
test.data.table
Runs a set of tests.
timetaken
Pretty print of time taken
tstrsplit
strsplit and transpose the resulting list efficiently
split
Split data.table into chunks in a list
transform.data.table
Data table utilities
subset.data.table
Subsetting data.tables