Processes the genealogy into an igraph object with appropriate vertex information, graph type, and edge weights.
dfToIG(geneal, vertexinfo = NULL, edgeweights = 1,
isDirected = FALSE)the full genealogy (in data frame format)
(default NULL) either names of columns in the genealogy which should be added to the database as vertex information or a data frame with information for all vertices such that the first column contains vertex names.
(default 1) name of a column which contains edge weights
(default FALSE) should the graph be a directed graph?
https://www.r-project.org for iGraph information