Plans for version 1.0

ModiaMath is not yet ready and should not be used for production simulation runs. The following features are planned to be implemented before ModiaMath version 1.0:

• General
  • Support of all features needed by Modia 1.0 and Modia3D 1.0.
  • Improved documentation.

• SimulationEngine
  • Sparse Jacobian for IDA (mainly available, but not yet transferred to restructured simulation engine).
  • Sparse Jacobian for nonlinear solver during initialization.
  • User-supplied dense Jacobian for IDA (pre-requisite for next step).
  • Support for mue-stabilization technique for DAEs with index > 1 (using Jacobian information).
  • Change basic engine from IDA to package DifferentialEquations (and access IDA via this interface).
  • If model is an ODE, support ODE integrators from DifferentialEquations package.
  • New inquiry function isCompletedIntegratorStep(..) to inquire when the integrator step is completed. This function shall have the same functionality as fmi2CompletedIntegratorStep and requires to restructure the integrator while-loop since the integrator must return after every completed step.
  • Linearization of the DAE after initialization and at the actual integration time instant in order that linear analysis and synthesis methods can be applied.

• NonlinearEquations
  • Transfering the FORTRAN code hybrd.f from Minpack. to a native Julia implementation. It is expected that this solver is more robust as Sundials KINSOL (implemented with adaptations, but not yet fully tested).
  • Using Minpack during initialization.

• Result
  • Integer and Boolean result variables.
  • Several time vectors for different result data.
  • Parameters (time vector has length 2).
  • Clocked variables (time vector has only values at clock ticks).
  • Automatic plot layout for clocked variables.
  • Support of another plot package (besides PyPlot). Probably best to support Plots.
  • Use named tuples to define line style elements, e.g.
    plot(result, ((name=:phi1, color=:blue), (name=:phi2, color=:red)) )

• Frames
  • Support splines for the interpolation of Frames (currently only linear interpolation supported).