v5.9.1

ModelingToolkit v5.9.1

Diff since v5.9.0

Closed issues:

• Images for documentation (#833)
• Calculating observed variables which are functions of algebraic variables fails (#834)

Merged pull requests:

• Remove Symbolics.jl from MTK docs (#827) (@ChrisRackauckas)
• Add acausal modeling tutorial (#835) (@ChrisRackauckas)
• add a bunch of tutorials (#836) (@ChrisRackauckas)
• Handle dependencies of observed variables properly (#837) (@YingboMa)

v5.9.0

ModelingToolkit v5.9.0

Diff since v5.8.0

Merged pull requests:

• Move StructuralTransformations to MTK (#830) (@YingboMa)

v5.8.0

ModelingToolkit v5.8.0

Diff since v5.7.0

Closed issues:

• Build observable functions (#815)

Merged pull requests:

• Populate the observed field in ODEFunction (#828) (@YingboMa)

v5.7.0

ModelingToolkit v5.7.0

Diff since v5.6.4

Closed issues:

• Variable order bug? (#172)
• Please add installation instructions (#182)
• Support more intense variable mappings (#297)
• broken macros when using import (#319)
• ModelingToolkit broken for SteadyStateProblems (#322)
• Document the parallel forms and targets better (#479)
• Expose Dagger scheduler options in DaggerForm (#483)
• Mixed derivatives (#520)
• Make EvalFunc hold world age and deprecate GeneralizedGenerated (#560)
• No method matching Expression(::Int) (#590)
• remove .op and .args (#633)
• Enhancement -- Full differentials and Delta (#635)
• Alias elimination can miss an equality? (#725)
• ERROR: DimensionMismatch when defining ODESystem separately from connected system (#808)
• @named macro to pass name from an assignment (#813)
• Rename / clarify that this is a CAS? (#821)

Merged pull requests:

• Add support for symbolic parameters (#777) (@pepijndevos)
• add single eq ODESystem constructor (#802) (@anandijain)
• Define inplace and out of place methods in ODEFunctionExpr (#804) (@mohamed82008)
• WIP: Alias elimination with singularity removal (#809) (@YingboMa)
• add isautonomous (#810) (@ChrisRackauckas)
• Require systems kwarg to ODESystem constructor to have unique names (#808) (#818) (@pbouffard)
• Add default parameter argument to the PDESystem (#820) (@ashutosh-b-b)
• Add @nAmed (#826) (@YingboMa)

v5.6.4

ModelingToolkit v5.6.4

Diff since v5.6.3

Closed issues:

• DiffEqFlux fails with ReactionSystem, but not with system declared with a normal function (#771)
• warnings when accessing system fields (#796)

Merged pull requests:

• turn coveralls back on (#794) (@isaacsas)
• Bring back multithreading (#798) (@shashi)
• Add DataDrivenDiffEq.jl to downstream tests (#799) (@ChrisRackauckas)
• use unflatten_long_ops in build_function again (#801) (@shashi)

v5.6.3

ModelingToolkit v5.6.3

Diff since v5.6.2

Closed issues:

• ODESystem defined with ArrayPartitions cannot be converted to ODEFunction using modelingtoolkitize (#778)
• build_function with sparse array inputs fail if nrow != ncol (#791)

Merged pull requests:

• small improvements to JumpProblem dispatches (#789) (@ChrisRackauckas)
• make modelingtoolkitize more robust to weird arrays (#790) (@ChrisRackauckas)
• add a parameter interface for PDE system and downstream test on NPDE (#792) (@ChrisRackauckas)

v5.6.2

ModelingToolkit v5.6.2

Diff since v5.6.1

Closed issues:

• Fix depwarns (#773)

Merged pull requests:

• Document getters (#785) (@YingboMa)
• Depwarn fixes (#788) (@YingboMa)

v5.6.1

ModelingToolkit v5.6.1

Diff since v5.6.0

Closed issues:

• Idea: Typed axes for array variables and parameters (#9)
• DAE Index Reduction (#18)
• [Regression] RuntimeGeneratedFunctions tagged under ModelingToolkit instead of precompiled user module (#678)
• unable to create ReactionSystems anymore on latest release (#779)

Merged pull requests:

• Allow evaluation module to be specified when building an ODEFunction (#681) (@dpad)
• WIP: build_function rewrite (#764) (@shashi)
• Fix ReactionSystem printing (#780) (@YingboMa)
• fix a bunch of depwarns (#784) (@ChrisRackauckas)
• Depwarns 2: Resurrection (#786) (@ChrisRackauckas)

v5.6.0

ModelingToolkit v5.6.0

Diff since v5.5.0

v5.5.0

ModelingToolkit v5.5.0

Diff since v5.4.0

Closed issues:

• ERROR: type PDESystem has no field eqs (#770)