admixturegraph (version 1.0.2)

add_graph_f4_sign: Extend a data frame with f_4 statistics predicted by a graph.

Description

Extracts the sign for the $f_4$ statistics predicted by the graph for all rows in a data frame and extends the data frame with the graph $f_4$.

Usage

add_graph_f4_sign(data, graph)

Arguments

data

The data frame to get the labels to compute the $f_4$ statistics from.

graph

The admixture graph.

Value

A data frame identical to data except with an additional column, graph_f4_sign, containing the sign of the $f_4$ statistics as determined by the graph.

Details

The data frame, data, must contain columns W, X, Y, and Z. The function then computes the sign of the $f4(W, X; Y, Z)$ statistics for all rows and adds these as a column, graph_f4_sign, to the data frame.