This creates pairs of x and y coordinates for a egogram, accompanied by alter IDs for each coordinate pair.

layout_egogram(altID, venn_var, pie_var)

## Arguments

altID Vector of alter IDs. Vector of values representing alter groups corresponding with venns in an egogram. Vector of values representing alter groups corresponding with pieces of pie in an egogram.

## Value

A dataframe with three columns: x, y and altID.