R Graphical Manual

Last data update: 2014.03.03

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R Release (3.2.3)
CranContrib
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Classification

Results 1 - 10 of 41 found.
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IDateTime (Package: data.table) : Integer based date class

Date and time classes with integer storage for fast sorting and grouping. Still experimental!

● Data Source: CranContrib
● Keywords: chron, utilities
● Alias: IDate, IDate-class, IDateTime, IDateTime.default, ITime, ITime-class, as.Date.IDate, as.IDate, as.IDate.Date, as.IDate.default, as.ITime, as.ITime.POSIXlt, as.ITime.character, as.ITime.default, as.ITime.times, as.POSIXct.IDate, as.POSIXct.ITime, as.POSIXlt.ITime, as.character.ITime, as.chron.IDate, as.chron.ITime, as.list.IDate, c.IDate, cut.IDate, format.ITime, hour, mday, mean.IDate, month, print.ITime, quarter, rep.IDate, rep.ITime, round.IDate, seq.IDate, split.IDate, wday, week, yday, year
● 0 images

chmatch (Package: data.table) : Faster match of character vectors

chmatch returns a vector of the positions of (first) matches of its first argument in its second. Both arguments must be character vectors.

● Data Source: CranContrib
● Keywords: data
● Alias: %chin%, chgroup, chmatch, chorder
● 0 images

as.xts.data.table (Package: data.table) : Efficient data.table to xts conversion

Efficient conversion of data.table to xts, data.table must have POSIXct or Date type in first column.

● Data Source: CranContrib
● Keywords:
● Alias: as.xts.data.table
● 0 images

setcolorder (Package: data.table) : Fast column reordering of a data.table by reference

In data.table parlance, all set* functions change their input by reference. That is, no copy is made at all, other than temporary working memory, which is as large as one column.. The only other data.table operator that modifies input by reference is :=. Check out the See Also section below for other set* function data.table provides.

● Data Source: CranContrib
● Keywords: data
● Alias: setcolorder
● 0 images

duplicated (Package: data.table) : Determine Duplicate Rows

duplicated returns a logical vector indicating which rows of a data.table (by key columns or when no key all columns) are duplicates of a row with smaller subscripts.

● Data Source: CranContrib
● Keywords: data
● Alias: anyDuplicated, anyDuplicated.data.table, duplicated, duplicated.data.table, unique, unique.data.table, uniqueN
● 0 images

rleid (Package: data.table) : Generate run-length type group id

A convenience function for generating a run-length type id column to be used in grouping operations. It accepts atomic vectors, lists, data.frames or data.tables as input.

● Data Source: CranContrib
● Keywords: data
● Alias: rleid, rleidv
● 0 images

setNumericRounding (Package: data.table) : Change or turn off numeric rounding

Change rounding to 0, 1 or 2 bytes when joining, grouping or ordering numeric (i.e. double, POSIXct) columns.

● Data Source: CranContrib
● Keywords: data
● Alias: getNumericRounding, setNumericRounding
● 0 images

shift (Package: data.table) : Fast lead/lag for vectors and lists

lead or lag vectors, lists, data.frames or data.tables implemented in C for speed.

● Data Source: CranContrib
● Keywords: data
● Alias: lag, lead, shift
● 0 images

setattr (Package: data.table) : Set attributes of objects by reference

In data.table, all set* functions change their input by reference. That is, no copy is made at all, other than temporary working memory which is as large as one column. The only other data.table operator that modifies input by reference is :=. Check out the See Also section below for other set* function that data.table provides.

● Data Source: CranContrib
● Keywords: data
● Alias: setattr, setnames
● 0 images

J (Package: data.table) : Creates a Join data table

Creates a data.table to be passed in as the i to a [.data.table join.

● Data Source: CranContrib
● Keywords: data
● Alias: CJ, J, SJ
● 0 images