Numerical vectors giving coordinates for points to be plotted in
the IBD triangle. Alternatively, k0 may be a data.frame containing columns
named k0 and k2.
new
Logical indicating if a new IBDtriangle should be drawn.
A character of same length as k0 and k2, or a single
logical TRUE or FALSE. If TRUE, and k0 is a data.frame, labels will
be created by pasting columns "ID1" and "ID2", if these are present. By
default, no labels are plotted.
col_labels, cex_labels, pos, adj
Parameters passed onto text() (if
labels is non-NULL).