= Comparison of Diva and Diana =

This page provides a detailed comparison between [wiki:Diva Diva] and [wiki:Diana Diana].

== Modeling ==

mdl2diva:
  * produces FORTRAN code for Promot models

mdl2diana:
  * produces C++ model code
  * generation of higher order model derivatives with respect to state variables and model parameters

== Simulation ==

Diva:
  * comprehensive list of dynamic solvers (SDASSL, SDASAC, LIMEXS, ...)
  * models simulation with discrete part (Petri nets)

Diana:
  * simulation with Sundials/IDA, ODESSA, DASPK solvers
  * only continuous models (Petri nets simulation is under development)

== Non-linear Analysis ==

Diva and Diana:
 * One-parameter continuation of steady-state solutions
 * Continuation of limit points
 * Periodic obits continuation

Diana:
 * Singularities of higher co-dimension (isola, hysteresis, pitchfork, winged cusp)
 * Hopf point continuation
 * Periodic orbits continuation with the recursive projection method 
   (large-scale dynamical models with low-dimensional slow dynamics)
 * Detection of periodic orbits bifurcations (limit point, period doubling, torus bifurcation)

== Optimization ==

Diana:

 * genetic algorithms for global optimization

== Extensibility ==

Diana has a python interface for the comfortable implementation of additional functionality,
e.g. implementation of state estimators (Kalman filter).