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Install
install.packages('data.table')
Monthly Downloads
815,805
Version
1.9.8
License
GPL-3 | file LICENSE
Maintainer
Matt Dowle
Last Published
November 25th, 2016
Functions in data.table (1.9.8)
Search all functions
as.data.table.xts
Efficient xts to as.data.table conversion
as.xts.data.table
Efficient data.table to xts conversion
as.data.table
Coerce to data.table
data.table-class
S4 Definition for data.table
address
Address in RAM of a variable
:=
Assignment by reference
all.equal
Equality Test Between Two Data Tables
chmatch
Faster match of character vectors
copy
Copy an entire object
between
Convenience functions for range subsets.
datatable.optimize
Optimisations in data.table
dcast.data.table
Fast dcast for data.table
duplicated
Determine Duplicate Rows
first
First item of an object
fwrite
Fast CSV writer
fread
Fast and friendly file finagler
fsort
Fast parallel sort
frank
Fast rank
data.table-package
Enhanced data.frame
foverlaps
Fast overlap joins
last
Last item of an object
like
Convenience function for calling regexpr.
na.omit.data.table
Remove rows with missing values on columns specified
print.data.table
data.table Printing Options
patterns
Obtain matching indices corresponding to patterns
setDTthreads
Set or get number of threads that data.table should use
IDateTime
Integer based date class
melt.data.table
Fast melt for data.table
J
Creates a Join data table
merge
Merge two data.tables
setDT
Coerce lists and data.frames to data.table by reference
rowid
Generate unique row ids within each group
setDF
Coerce a data.table to data.frame by reference
setattr
Set attributes of objects by reference
rbindlist
Makes one data.table from a list of many
setops
Set operations for data tables
setNumericRounding
Change or turn off numeric rounding
setkey
Create key on a data table
setcolorder
Fast column reordering of a data.table by reference
rleid
Generate run-length type group id
setorder
Fast row reordering of a data.table by reference
test.data.table
Runs a set of tests.
shouldPrint
For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
shift
Fast lead/lag for vectors and lists
timetaken
Pretty print of time taken
special-symbols
Special symbols
subset.data.table
Subsetting data.tables
split
Split data.table into chunks in a list
transform.data.table
Data table utilities
tables
Display all objects of class 'data.table'
transpose
Efficient transpose of list
truelength
Over-allocation access
tstrsplit
strsplit and transpose the resulting list efficiently