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Comparison operators for durations (mt_duration)

Source: R/compare.R
mt_duration-compare.Rd

A duration is a scalar magnitude of time measured in a given chronon (e.g. days(3)), with no reference to a point in time. Comparing two durations is therefore a plain magnitude comparison, once both operands have been expressed in a common chronon:

  • a == b iff the two magnitudes are equal in their common chronon

  • a < b, a <= b, a > b, a >= b compare the magnitudes directly

Unlike mt_linear comparison there is no interval/span to consider, so this is a total order. When both operands already share a chronon the magnitudes are compared as-is; otherwise both are scaled to their finest common chronon (the same scaling used when combining durations arithmetically, see duration_combine()).

Usage

# S4 method for class 'mt_duration'
e1 == e2
# S4 method for class 'mt_duration'
e1 != e2
# S4 method for class 'mt_duration'
e1 < e2
# S4 method for class 'mt_duration'
e1 <= e2
# S4 method for class 'mt_duration'
e1 > e2
# S4 method for class 'mt_duration'
e1 >= e2

Arguments

e1, e2

mt_duration vectors (or values castable to one, such as plain numeric vectors interpreted in the other operand's chronon).

Value

A logical vector.