Pairwise or one of the existing
functions listed below.
Anyway, pairwise.family is an object of class "isf"
containing a function pairwise$eval for
evaluating the sufficient statistics of any pairwise interaction
point process model taking an exponential family form.pairsat.family,
ord.family,
inforder.family. Pairwise interactions:
Poisson,
Pairwise,
PairPiece,
Strauss,
StraussHard,
Softcore.
Other interactions:
AreaInter,
Geyer,
Saturated,
Ord,
OrdThresh.