#424 Relationship and consanguinity computing

[Jean-Marie [FRA]]

It woul be great if you coul include a "consanguinity
calculation" feature, in order to calculate family
relationships between two individuals.
The relationship between any two persons is calculated
based on a common ancestor. It is possible that there
may be several common ancestors, and for a given
ancestor several connecting branches of different
lengths.This informs you who these ancestors are, and
how many branches there are between the people. It lets
you know what this relationship is : whether a brother,
a sister, a great-aunt, or an ancestor who might be 15
generations distant, etc.

The consanguinity (mathematical relationship) between
any two persons is calculated from their relationship
links. For example, between brothers and sisters, this
number is 25%, which represents a close relationship.
Between first cousins, this number is 6.25%. The
different combinations of relationship links between
any two people leads to complex computations, which
would be practically impossible to make by hand!

The algorithms of consanguinity and relationships are
credited to Didier Rémy, which developped Geneweb
software (http://pauillac.inria.fr/~remy)

More to see at: http://geneweb.sourceforge.net/