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Install
install.packages('data.table')
Monthly Downloads
845,520
Version
1.11.8
License
MPL-2.0 | file LICENSE
Maintainer
Matt Dowle
Last Published
September 30th, 2018
Functions in data.table (1.11.8)
Search functions
J
Creates a Join data table
datatable.optimize
Optimisations in data.table
groupingsets
Grouping Set aggregation for data tables
setattr
Set attributes of objects by reference
tables
Display 'data.table' metadata
dcast.data.table
Fast dcast for data.table
fwrite
Fast CSV writer
setcolorder
Fast column reordering of a data.table by reference
test.data.table
Runs a set of tests.
fread
Fast and friendly file finagler
data.table-class
S4 Definition for data.table
fsort
Fast parallel sort
setorder
Fast row reordering of a data.table by reference
melt.data.table
Fast melt for data.table
data.table-package
Enhanced data.frame
shift
Fast lead/lag for vectors and lists
duplicated
Determine Duplicate Rows
frank
Fast rank
foverlaps
Fast overlap joins
setDT
Coerce lists and data.frames to data.table by reference
setNumericRounding
Change or turn off numeric rounding
timetaken
Pretty print of time taken
first
First item of an object
transform.data.table
Data table utilities
chmatch
Faster match of character vectors
copy
Copy an entire object
na.omit.data.table
Remove rows with missing values on columns specified
last
Last item of an object
like
Convenience function for calling regexpr.
rbindlist
Makes one data.table from a list of many
merge
Merge two data.tables
setDTthreads
Set or get number of threads that data.table should use
patterns
Obtain matching indices corresponding to patterns
print.data.table
data.table Printing Options
rowid
Generate unique row ids within each group
shouldPrint
For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
setDF
Coerce a data.table to data.frame by reference
split
Split data.table into chunks in a list
rleid
Generate run-length type group id
special-symbols
Special symbols
tstrsplit
strsplit and transpose the resulting list efficiently
setkey
Create key on a data table
subset.data.table
Subsetting data.tables
setops
Set operations for data tables
update.dev.pkg
Perform update of development version of a package
transpose
Efficient transpose of list
truelength
Over-allocation access
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
as.matrix
Convert a data.table to a matrix
address
Address in RAM of a variable
IDateTime
Integer based date class
all.equal
Equality Test Between Two Data Tables
:=
Assignment by reference
between
Convenience functions for range subsets.