Computes spatial position models: the potential model as defined
by Stewart (1941)

R package for computing spatial position models:
:warning: Functions related to Stewart's potential are deprecated. Please use the potential package instead.
install.packages("SpatialPosition")
Vignettes contain commented scripts on how to use SpatialPostion.
vignette(topic = "SpatialPosition")
vignette(topic = "StewartExample")