v0.8.2

Modia v0.8.2

Diff since v0.8.1

• New exported functions

  • modelToJSON(model; expressionsAsStrings=true)
  • JSONToModel(json)
  • writeModel(filename, model; log=true)
  • readModel(filename; log=true)
    writeModel saves the model in JSON format on file and readModel reads the model from a JSON file.

• Modia/examples/ServoSystem.jl enhanced, so that the hierarchical model with units is
  first stored in JSON format on file, then the model is read from file, a parameter is modified,
  and then the model is passed to @instantiateModel(..).

• @instantiateModel(...):

  • @instantiateModel(..., logCode=true, ...) provides now correct unit type casts for scalars.
  • @instantiateModel(..., saveCodeOnFile=fileName, ...) stores the generated code on file fileName.
  • Automatically use @instantiatedModel(..., unitless=true, ..), if FloatType = MonteCarloMeasurements.XXX,
    because there are easily cases where this fails, if units are present.

• @showModel model: Nicer pretty print if model is hierarchical.

• New function Modia.unitAsString(unitOfQuantity),
  see Unitful issue 412 (PainterQubits/Unitful.jl#412).

• Remove empty hierarchies in model parameters (seen with simulate!(..., logParameters=true)).

• Memory allocation reduced if states or tearing variables are SVectors.

• Improved casting and checking of types in the generated code
  (see new test model Modia/test/TestUnitAsString.jl).

• Moved ModiaBase.Symbolic.makeDerVar from ModiaBase to new file Modia/src/Symbolic.jl (because makeDerVar needs FloatType for
  generating type-stable code and FloatType is available in Modia but not in ModiaBase).

• Github actions workflow added for automatic tests on Linux/Windows/MacOS, for pull requests on main.

Bug fixes

• Fixed issue with unit on macOS (exponents had been displayed as Unicode superscripts when converting
  the unit to a string, leading to errors in the further processing).

• Hide result only if Var(hideResult=true) (previously, hideResult=false was treated as true).

• Modia/models/Rotational.jl: Change some Int to Float64 values, because errors occured in some situations.

Merged pull requests:

• Test github actions workflow for automatic tests if pull request to main (#138) (@MartinOtter)
• Reduce memory allocation if states or tearing variables are SVectors … (#139) (@MartinOtter)
• Remove empty parameter levels (#140) (@MartinOtter)