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Install
install.packages('data.table')
Monthly Downloads
1,004,818
Version
1.11.4
License
MPL-2.0 | file LICENSE
Maintainer
Matt Dowle
Last Published
May 27th, 2018
Functions in data.table (1.11.4)
Search all functions
merge
Merge two data.tables
melt.data.table
Fast melt for data.table
datatable.optimize
Optimisations in data.table
dcast.data.table
Fast dcast for data.table
last
Last item of an object
like
Convenience function for calling regexpr.
frank
Fast rank
foverlaps
Fast overlap joins
print.data.table
data.table Printing Options
patterns
Obtain matching indices corresponding to patterns
groupingsets
Grouping Set aggregation for data tables
J
Creates a Join data table
fwrite
Fast CSV writer
data.table-class
S4 Definition for data.table
tstrsplit
strsplit and transpose the resulting list efficiently
data.table-package
Enhanced data.frame
copy
Copy an entire object
fread
Fast and friendly file finagler
update.dev.pkg
Perform update of development version of a package
fsort
Fast parallel sort
na.omit.data.table
Remove rows with missing values on columns specified
chmatch
Faster match of character vectors
setDTthreads
Set or get number of threads that data.table should use
split
Split data.table into chunks in a list
rowid
Generate unique row ids within each group
setorder
Fast row reordering of a data.table by reference
subset.data.table
Subsetting data.tables
setDF
Coerce a data.table to data.frame by reference
shift
Fast lead/lag for vectors and lists
setattr
Set attributes of objects by reference
setDT
Coerce lists and data.frames to data.table by reference
rleid
Generate run-length type group id
setNumericRounding
Change or turn off numeric rounding
rbindlist
Makes one data.table from a list of many
setops
Set operations for data tables
setkey
Create key on a data table
shouldPrint
For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
setcolorder
Fast column reordering of a data.table by reference
timetaken
Pretty print of time taken
special-symbols
Special symbols
transform.data.table
Data table utilities
tables
Display 'data.table' metadata
test.data.table
Runs a set of tests.
truelength
Over-allocation access
transpose
Efficient transpose of list
all.equal
Equality Test Between Two Data Tables
as.data.table
Coerce to data.table
between
Convenience functions for range subsets.
as.xts.data.table
Efficient data.table to xts conversion
:=
Assignment by reference
as.data.table.xts
Efficient xts to as.data.table conversion
IDateTime
Integer based date class
address
Address in RAM of a variable
as.matrix
Convert a data.table to a matrix
first
First item of an object
duplicated
Determine Duplicate Rows