get_provenance: Get indexes of provenance-related variables

In Andros-Spica/cerUB: Protocols for exploring archaeometric data

Description

Get indexes of the compositional and petrographic variables indicative of provenance. Petrographic variables must use the cerUB naming system. Compositional variables must have been transformed using transform_coda.

Usage

get_provenance(data, coda_variables, transformation_method = "")

Arguments

data	Data frame containing petrographic variables that use the cerUB naming system.
coda_variables	Character/Numeric, vector with the names/indexes of the compositional variables.
transformation_method	Character, vector specifying a transformation: "ALR" -> additive log-ratio, "CLR" -> centered log-ratio, "ILR" -> isometric log-ratio. Additionally, accepts "log" for applying logarithmic transformation.

Value

List of two numeric vectors containing the column indexes of (1) petrographic and (2) compositional variables.

Andros-Spica/cerUB documentation built on June 9, 2020, 9:22 p.m.