Analysis and visualization of plant disease progress curve data. Functions for
fitting two-parameter population dynamics models (exponential, monomolecular, logistic
and Gompertz) to proportion data for single or multiple epidemics using either linear
or no-linear regression. Statistical and visual outputs are provided to aid in model
selection. Synthetic curves can be simulated for any of the models given the parameters.
See Laurence V. Madden, Gareth Hughes, and Frank van den Bosch (2007)