allen_relation {ArchaeoPhases}

R Documentation

Allen relation of two definite intervals

Description

Calculates the Allen relation of two definite intervals and reports the one-letter code for the interval proposed by Thomas Alspaugh. Stops with an error if the end of an interval is earlier than its start.

Usage

allen_relation(start_1, end_1, start_2, end_2)

Arguments

start_1	The start date of the first interval
end_1	The end date of the first interval
start_2	The start date of the second interval
end_2	The end date of the second interval

Value

A one-letter code indicating the Allen relation

Author(s)

Thomas S. Dye

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