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Install
install.packages('data.table')
Monthly Downloads
1,004,818
Version
1.11.2
License
MPL-2.0 | file LICENSE
Maintainer
Matt Dowle
Last Published
May 8th, 2018
Functions in data.table (1.11.2)
Search all functions
merge
Merge two data.tables
transform.data.table
Data table utilities
split
Split data.table into chunks in a list
melt.data.table
Fast melt for data.table
setattr
Set attributes of objects by reference
fwrite
Fast CSV writer
last
Last item of an object
rowid
Generate unique row ids within each group
setDF
Coerce a data.table to data.frame by reference
timetaken
Pretty print of time taken
setcolorder
Fast column reordering of a data.table by reference
subset.data.table
Subsetting data.tables
data.table-package
Enhanced data.frame
shouldPrint
For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
na.omit.data.table
Remove rows with missing values on columns specified
fsort
Fast parallel sort
tstrsplit
strsplit and transpose the resulting list efficiently
update.dev.pkg
Perform update of development version of a package
fread
Fast and friendly file finagler
special-symbols
Special symbols
groupingsets
Grouping Set aggregation for data tables
print.data.table
data.table Printing Options
setorder
Fast row reordering of a data.table by reference
patterns
Obtain matching indices corresponding to patterns
setNumericRounding
Change or turn off numeric rounding
like
Convenience function for calling regexpr.
setDT
Coerce lists and data.frames to data.table by reference
setops
Set operations for data tables
transpose
Efficient transpose of list
setDTthreads
Set or get number of threads that data.table should use
rbindlist
Makes one data.table from a list of many
setkey
Create key on a data table
truelength
Over-allocation access
test.data.table
Runs a set of tests.
shift
Fast lead/lag for vectors and lists
rleid
Generate run-length type group id
tables
Display 'data.table' metadata
as.data.table.xts
Efficient xts to as.data.table conversion
as.xts.data.table
Efficient data.table to xts conversion
all.equal
Equality Test Between Two Data Tables
as.matrix
Convert a data.table to a matrix
between
Convenience functions for range subsets.
J
Creates a Join data table
as.data.table
Coerce to data.table
address
Address in RAM of a variable
:=
Assignment by reference
IDateTime
Integer based date class
chmatch
Faster match of character vectors
frank
Fast rank
duplicated
Determine Duplicate Rows
copy
Copy an entire object
first
First item of an object
dcast.data.table
Fast dcast for data.table
datatable.optimize
Optimisations in data.table
data.table-class
S4 Definition for data.table
foverlaps
Fast overlap joins