Mpre                    Time sequence prediction for the population
                        dynamic changes.
Npop                    Data for forest population number of within
                        different age class.
Ntable                  Organize the data into a data format suitable
                        for population structure analysis.
dyn                     Quantification of population dynamics
goodness                Model quality assessment.
lifetable               Generte the static life table to analyze the
                        population dynamic changes.
psdfun                  Regression analysis for survival curves.
