between {data.table}R Documentation

Convenience function for range subset logic.

Description

Intended for use in data.table i clause 'where'.

Usage

between(x,lower,upper,incbounds=TRUE)
x 

Arguments

x Any vector e.g. numeric, character, date, ...
lower Lower range bound.
upper Upper range bound.
incbounds TRUE means inclusive bounds i.e. [lower,upper]. FALSE means exclusive bounds i.e. (lower,upper).

Value

Integer vector containing the locations of x which lie within the range [lower,upper] or (lower,upper).

Note

Current implementation does not make use of sorted keys.

Author(s)

Matthew Dowle

See Also

data.table, like

Examples

    DT = data.table(a=1:5, b=6:10)
    DT[b %between% c(7,9)]   # select from DT where b between 7 and 9

[Package data.table version 1.2 Index]