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Takes a data frame describing stratigraphic units and relations and turns it into a graph representation.

Usage

stratigraph(data, label, relation, direction = c("above", "below"))

Arguments

data

Data frame of stratigraphic units, containing at least a unique label column and a column describing stratigraphic relations.

label

Name of the column containing labels of the stratigraphic units.

relation

Name of the column describing the stratigraphic relations between units.

direction

Direction described by relation, i.e. are the units in that column "above" or "below" the ones in units. Default: "above".

Value

A stratigraph object.