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Install
install.packages('data.table')
Monthly Downloads
971,635
Version
1.11.6
License
MPL-2.0 | file LICENSE
Maintainer
Matt Dowle
Last Published
September 19th, 2018
Functions in data.table (1.11.6)
Search all functions
duplicated
Determine Duplicate Rows
chmatch
Faster match of character vectors
rowid
Generate unique row ids within each group
special-symbols
Special symbols
groupingsets
Grouping Set aggregation for data tables
datatable.optimize
Optimisations in data.table
fwrite
Fast CSV writer
shouldPrint
For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
dcast.data.table
Fast dcast for data.table
setDF
Coerce a data.table to data.frame by reference
first
First item of an object
copy
Copy an entire object
between
Convenience functions for range subsets.
fsort
Fast parallel sort
update.dev.pkg
Perform update of development version of a package
rleid
Generate run-length type group id
tstrsplit
strsplit and transpose the resulting list efficiently
fread
Fast and friendly file finagler
rbindlist
Makes one data.table from a list of many
data.table-class
S4 Definition for data.table
data.table-package
Enhanced data.frame
print.data.table
data.table Printing Options
last
Last item of an object
patterns
Obtain matching indices corresponding to patterns
tables
Display 'data.table' metadata
like
Convenience function for calling regexpr.
test.data.table
Runs a set of tests.
foverlaps
Fast overlap joins
setDT
Coerce lists and data.frames to data.table by reference
melt.data.table
Fast melt for data.table
frank
Fast rank
na.omit.data.table
Remove rows with missing values on columns specified
setDTthreads
Set or get number of threads that data.table should use
split
Split data.table into chunks in a list
subset.data.table
Subsetting data.tables
merge
Merge two data.tables
setkey
Create key on a data table
setattr
Set attributes of objects by reference
setops
Set operations for data tables
transpose
Efficient transpose of list
setNumericRounding
Change or turn off numeric rounding
truelength
Over-allocation access
setcolorder
Fast column reordering of a data.table by reference
timetaken
Pretty print of time taken
transform.data.table
Data table utilities
setorder
Fast row reordering of a data.table by reference
shift
Fast lead/lag for vectors and lists
as.data.table.xts
Efficient xts to as.data.table conversion
as.matrix
Convert a data.table to a matrix
as.xts.data.table
Efficient data.table to xts conversion
all.equal
Equality Test Between Two Data Tables
as.data.table
Coerce to data.table
J
Creates a Join data table
IDateTime
Integer based date class
address
Address in RAM of a variable
:=
Assignment by reference