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Install
install.packages('data.table')
Monthly Downloads
943,031
Version
1.13.0
License
MPL-2.0 | file LICENSE
Issues
857
Pull Requests
91
Stars
2,899
Forks
920
Repository
https://github.com/Rdatatable/data.table
Homepage
http://r-datatable.com
Maintainer
Matt Dowle
Last Published
July 24th, 2020
Functions in data.table (1.13.0)
Search functions
between
Convenience functions for range subsets.
key<-
Deprecated.
data.table-package
Enhanced data.frame
chmatch
Faster match of character vectors
cdt
data.table exported C routines
data.table-class
S4 Definition for data.table
datatable.optimize
Optimisations in data.table
duplicated
Determine Duplicate Rows
dcast.data.table
Fast dcast for data.table
fsort
Fast parallel sort
fcoalesce
Coalescing missing values
copy
Copy an entire object
fwrite
Fast CSV writer
fread
Fast and friendly file finagler
print.data.table
data.table Printing Options
frank
Fast rank
fifelse
Fast ifelse
rbindlist
Makes one data.table from a list of many
fcase
fcase
roll
Rolling functions
patterns
Obtain matching indices corresponding to patterns
foverlaps
Fast overlap joins
groupingsets
Grouping Set aggregation for data tables
setDTthreads
Set or get number of threads that data.table should use
melt.data.table
Fast melt for data.table
setcolorder
Fast column reordering of a data.table by reference
setkey
Create key on a data.table
.Last.updated
Number of rows affected by last update
like
Convenience function for calling grep.
merge
Merge two data.tables
setDF
Coerce a data.table to data.frame by reference
timetaken
Pretty print of time taken
transform.data.table
Data table utilities
setops
Set operations for data tables
setNumericRounding
Change or turn off numeric rounding
subset.data.table
Subsetting data.tables
setattr
Set attributes of objects by reference
transpose
Efficient transpose of list
truelength
Over-allocation access
test
Test assertions for equality, exceptions and console output
rowid
Generate unique row ids within each group
setDT
Coerce lists and data.frames to data.table by reference
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
nafill
Fill missing values
last
First/last item of an object
setorder
Fast row reordering of a data.table by reference
split
Split data.table into chunks in a list
tables
Display 'data.table' metadata
rleid
Generate run-length type group id
test.data.table
Runs a set of tests.
shift
Fast lead/lag for vectors and lists
special-symbols
Special symbols
tstrsplit
strsplit and transpose the resulting list efficiently
update.dev.pkg
Perform update of development version of a package
:=
Assignment by reference
as.matrix
Convert a data.table to a matrix
address
Address in RAM of a variable
J
Creates a join
data.table
IDateTime
Integer based date class
as.xts.data.table
Efficient data.table to xts conversion
as.data.table.xts
Efficient xts to as.data.table conversion
as.data.table
Coerce to data.table
all.equal
Equality Test Between Two Data Tables