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Install
install.packages('data.table')
Monthly Downloads
1,004,818
Version
1.12.0
License
MPL-2.0 | file LICENSE
Maintainer
Matt Dowle
Last Published
January 13th, 2019
Functions in data.table (1.12.0)
Search all functions
IDateTime
Integer based date class
data.table-class
S4 Definition for data.table
data.table-package
Enhanced data.frame
roll
Rolling functions
setNumericRounding
Change or turn off numeric rounding
fread
Fast and friendly file finagler
setattr
Set attributes of objects by reference
setcolorder
Fast column reordering of a data.table by reference
setkey
Create key on a data table
print.data.table
data.table Printing Options
rbindlist
Makes one data.table from a list of many
shouldPrint
For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
shift
Fast lead/lag for vectors and lists
as.data.table
Coerce to data.table
as.data.table.xts
Efficient xts to as.data.table conversion
fsort
Fast parallel sort
chmatch
Faster match of character vectors
copy
Copy an entire object
fwrite
Fast CSV writer
as.matrix
Convert a data.table to a matrix
as.xts.data.table
Efficient data.table to xts conversion
setDTthreads
Set or get number of threads that data.table should use
:=
Assignment by reference
truelength
Over-allocation access
foverlaps
Fast overlap joins
frank
Fast rank
patterns
Obtain matching indices corresponding to patterns
between
Convenience functions for range subsets.
datatable.optimize
Optimisations in data.table
dcast.data.table
Fast dcast for data.table
groupingsets
Grouping Set aggregation for data tables
like
Convenience function for calling regexpr.
update.dev.pkg
Perform update of development version of a package
melt.data.table
Fast melt for data.table
last
Last item of an object
setDF
Coerce a data.table to data.frame by reference
tstrsplit
strsplit and transpose the resulting list efficiently
setDT
Coerce lists and data.frames to data.table by reference
setops
Set operations for data tables
setorder
Fast row reordering of a data.table by reference
transform.data.table
Data table utilities
rleid
Generate run-length type group id
transpose
Efficient transpose of list
rowid
Generate unique row ids within each group
special-symbols
Special symbols
split
Split data.table into chunks in a list
test.data.table
Runs a set of tests.
timetaken
Pretty print of time taken
address
Address in RAM of a variable
all.equal
Equality Test Between Two Data Tables
duplicated
Determine Duplicate Rows
first
First item of an object
merge
Merge two data.tables
na.omit.data.table
Remove rows with missing values on columns specified
subset.data.table
Subsetting data.tables
tables
Display 'data.table' metadata
J
Creates a Join data table