v8.38.0

ModelingToolkit v8.38.0

Diff since v8.37.0

Closed issues:

• Good resource on structural simplification algorithms (#2002)

Merged pull requests:

• bump SymbolicIndexingInterface to 0.2 (#1997) (@oscardssmith)

v8.37.0

ModelingToolkit v8.37.0

Diff since v8.36.0

Closed issues:

• structural_simplify doesn't handle parameter*derivative properly (#1169)
• No easy to read label for plot without explicit vars argument (#1433)
• Another example of slow ODEProblem and solve (#1962)
• structural_simplify redefines variables in coupled systems of equations and fails to run (#1976)
• Bug in igbt model, help needed for the revising the code (#1977)
• how to model a switch, I can not see what is wrong with my switch code. (#1978)
• I meet a problem in discrete events (#1984)
• I meet a problem for swtich __ Anyone can help? (#1985)

Merged pull requests:

• Reverse the order of the boolean check in the inner loop of get_cset_sv (#1964) (@evetion)
• Try to avoid violating AliasGraph invariants (#1975) (@Keno)
• Add unit validation for instream op (#1981) (@contradict)
• Symbolic indexing rework (#1988) (@AayushSabharwal)
• Update Downstream.yml (#1992) (@jake484)
• Reorganize the documentation (#1993) (@ChrisRackauckas)
• CompatHelper: add new compat entry for SymbolicUtils at version 0.19 for package docs, (keep existing compat) (#1995) (@github-actions[bot])

v8.36.0

ModelingToolkit v8.36.0

Diff since v8.35.2

Merged pull requests:

• Enable symbolic remake for optimization problems (#1972) (@ValentinKaisermayer)

v8.35.2

ModelingToolkit v8.35.2

Diff since v8.35.1

Closed issues:

• Help！！！！！ (#1970)

Merged pull requests:

• Fix tests for indexing bug fix (#1971) (@ChrisRackauckas)

v8.35.1

ModelingToolkit v8.35.1

Diff since v8.35.0

Merged pull requests:

• CompatHelper: bump compat for NonlinearSolve to 1 for package docs, (keep existing compat) (#1966) (@github-actions[bot])
• Update retcodes in tests (#1969) (@ChrisRackauckas)

v8.35.0

ModelingToolkit v8.35.0

Diff since v8.34.0

Closed issues:

• structural_simplify bug (I think) (#1178)
• DOC issue: link to a 403 page (#1935)
• I want to implement a IGBT model (a kind of switch), and the model dynamics changes with control input, so how should I write the code? (#1956)
• Help !!!!!! (#1960)

Merged pull requests:

• Add DelayParentScope scoping utility (#1951) (@jamesjscully)
• Reintroduce DataDrivenDiffEq Downstream Tests (#1953) (@AlCap23)
• Update optimizationsystem.jl - Documentation (#1955) (@avinashresearch1)
• add test for multi-rate system (#1959) (@baggepinnen)
• Change to SimpleNonlinearSolve (#1967) (@ChrisRackauckas)

v8.34.0

ModelingToolkit v8.34.0

Diff since v8.33.1

Closed issues:

• How should I write code if my model dynamics changes with control input? My model is a IGBT model (a kind of switch) (#1957)

Merged pull requests:

• Implements process_p_u0_symbolic from SciMLBase (#1941) (@ValentinKaisermayer)
• Work toward merging clock processing with the common interface (#1949) (@YingboMa)
• [skip ci] doc compat (#1952) (@ArnoStrouwen)
• delete coveralls (#1954) (@ArnoStrouwen)

v8.33.1

ModelingToolkit v8.33.1

Diff since v8.33.0

Closed issues:

• SDESystem composition (#983)
• Solving a system with initial condition of the form $f(0) = g(0)$ (#1911)

Merged pull requests:

• reproducible docs (#1936) (@ArnoStrouwen)
• spelling (#1937) (@ArnoStrouwen)
• Add affect codegen for hybrid systems (#1938) (@YingboMa)
• canonize docs (#1940) (@ArnoStrouwen)
• Fix OptimizationProblemExpr (#1942) (@AayushSabharwal)
• Makes cons_h and cons_j optional (#1943) (@ValentinKaisermayer)
• fixed sparsity bug (#1946) (@bradcarman)
• Fix constants handling in ODAEProblem (#1950) (@YingboMa)

v8.33.0

ModelingToolkit v8.33.0

Diff since v8.32.0

Closed issues:

• Structual simplify for OptimizationSystem (#1915)

Merged pull requests:

• Add split_system that splits the system by their time domain (#1913) (@YingboMa)
• get_cset_sv: return as soon as cset is found (#1918) (@visr)
• Add unit validation for Connections (#1929) (@contradict)
• DEO -> MOL in docs (#1930) (@xtalax)
• Stop exporting objective and remove its doc (#1931) (@YingboMa)
• Only do the global docs (#1932) (@ChrisRackauckas)

v8.32.0

ModelingToolkit v8.32.0

Diff since v8.31.0

Closed issues:

• Extending the metadata system from Symbolics to AbstractSystem (#1039)
• ERROR: LoadError: UndefVarError: handle_varmap not defined (#1924)

Merged pull requests:

• forward tspan in modelingtoolkitize (#1921) (@anandijain)
• make add_input_disturbance handle MIMO systems (#1923) (@baggepinnen)
• Add structural_simplify support for OptimizationSystem (#1926) (@YingboMa)
• Add observed support for optimization systems (#1927) (@YingboMa)