Biograph is designed to facilitate the descriptive and
statistical analysis of life histories. It follows a
multistate perspective on the life course and conceptualizes
the life course as a sequence of states and transitions between
states (events). Transitions are governed by transition rates
that depend on event counts and exposure times. Transition
rates also depend on covariates. Biograph produces useful
graphics and computes life-course indicators for individuals
and groups. The package structures the data for multistate
statistical and demographic modeling of life histories. The
package accepts data in a Biograph format. The Doc subdirectory
of the package contains a description of how to prepare
Biograph objects. It includes several illustrations and R code.