v6.19.0

DifferentialEquations v6.19.0

Diff since v6.18.0

Closed issues:

• FAQ suggestion: lazily allocate buffers for use with automatic differentiation (#769)
• Import error when using diffeqpy after updating to v6.17.2 (#775)
• Stochastic differential equations - the timeseries_steps_mean function gives a Boundserror when accessing Ensemble solution (#778)
• EnsembleThreads does not use multiple cores (#780)

Merged pull requests:

• add prepare_alg to the solve preparation post default (#782) (@ChrisRackauckas)

v6.18.0

DifferentialEquations v6.18.0

Diff since v6.17.2

Closed issues:

• DifferentialEquations precompilation fails in Julia 1.4.2 (#768)
• Ambiguous method error with ForwardDiff and Rodas Solver (#770)
• Plotting Ensemble solutions blocks out "label" attribute (#771)

Merged pull requests:

• CompatHelper: bump compat for "DiffEqJump" to "7" (#777) (@github-actions[bot])

v6.17.2

DifferentialEquations v6.17.2

Diff since v6.17.1

Closed issues:

• Callbacks not allowed at t=0 (#601)
• Integrator stepped past tstops but the algorithm was dtchangeable (#642)
• "Double callback crossing floating pointer reducer errored. Report this issue." (#647)
• Double callback crossing floating pointer reducer errored. Report this issue. (#674)
• Floating Point Error (#688)
• Event detection not continuously/not always triggering (#696)
• Double callback crossing floating pointer reducer errored. Report this issue. (#724)
• Working with ForwardDiff.Dual causes ArgumentError: reducing over an empty collection is not allowed (#753)
• What happens when :autodiff=true while also specifying jac_prototype? (#756)
• Solving DAE with non-Vector state (#757)
• Double callback crossing floating pointer reducer error (#758)
• Only trivial solution for in-place definition of ODE RHS (#759)
• resizing integrator doesn't work with TRBDF2 (#761)
• solve(EnsembleProblem(::NoiseProblem)) does not work (#766)

Merged pull requests:

• Mass matrix handling for SDEs (#767) (@YingboMa)

v6.17.1

DifferentialEquations v6.17.1

Diff since v6.17.0

Closed issues:

• StackOverflow: Second order ODE giving wrong results (#751)

Merged pull requests:

• bigger tweak to ODE defaults (#752) (@ChrisRackauckas)

v6.17.0

DifferentialEquations v6.17.0

Diff since v6.16.0

Closed issues:

• Solver gets trapped when using callbacks (#703)
• Test Failed at default_ode_alg_test.jl:12 (#710)
• Solution is saved twice when using two DiscreteCallbacks (#711)
• Table traits don't apply when the initial condition is a vector (#712)
• An error occurred in SDE problem with Complex number (#713)
• How to inquire the automatically selected algorithm? (#714)
• Error when using VariableJumpRate in DiscreteProblem (#715)
• Simultaneous parameter and initial conditions estimation for ODEs (#717)
• VectorContinuousCallback creating too many time steps? (#720)
• Cannot replicate code in documentation (#721)
• mean not defined (MonteCarloMeasurements) (#722)
• ERROR: InexactError: Int64(0.2) with Zygote (#723)
• EnsembleProblem stackoverflow (#727)
• Error showing EnsembleSolution in Pluto notebooks (#728)
• Type instability in fields of ODEProblem and ODEIntegrator (#730)
• EnsembleAnalysis problem when integer values are used for initial conditions (#731)
• EnsembleProblem won't work when save_start=false, save_end=false and save_everystep=false (#732)
• FunctionMap using enum is broken (#734)
• Precompilation fails in Sundials_jll, libopenblas_.so not found (#737)
• Precompilation error with 1.6 upgrade (#738)
• Use Autovern9 and Rodas5 became slow when meet instability and maxiters needed (#739)
• Indexing into EnsembleSolution gives group of solutions instead of a single solution (#742)
• Diagonal Mass Matrix (#743)
• Error using Rodas4() (#744)
• Executing "using DifferentialEquations" i had error (#745)
• Integrator stepped past tstops but the algorithm was dtchangeable (#747)
• DAEs with jac_prototype aren't working (#748)
• Questions about using automatic differentiation to get the local sensitivity by an adaptive ODE solver (#749)

v6.16.0

DifferentialEquations v6.16.0

Diff since v6.15.0

Closed issues:

• Automated PDE solving fit for DifferentialEquations.jl (#469)
• Add new option to DAE solvers to never initialize DAE (#549)
• type unstable when returning EnsembleSolution object (#603)
• Sundials FunJac - MethodError (#631)
• DPRKN6 doesn't appear to use its free 6th order interpolant (#633)
• Need help in Second order Differential equation (#634)
• Installation fails on Win10 & julia 1.4.2 (#635)
• Question about setting a "shutdown" condition (#638)
• [feature request] DEStats results for the adjoint process when calculating gradients (#639)
• DABDF2 crashes (probably related to analytic Jacobian computation) (#641)
• UndefVarError: pprint_impl not defined during precompilation on Julia 1.4.2 (#643)
• Could not load symbol jl_function_ptr (#644)
• Unable to specify noise process on RODEProblem (#645)
• Need an adjoint for constructor Pair (#649)
• error on using DifferentialEquations (#652)
• Error: unexpected values in bisection (#653)
• changing the ODEfunction in affect! (#654)
• Error: Non bracketing interval passed in bisection method (#656)
• matching error when trying to run the example in tutorial (#657)
• ERROR: UndefVarError: top not defined (#658)
• Method Error after package update (#659)
• fail to load the package "Specialfunctions" due to requirements of DifferentialEquation package (#660)
• Solving NN System of SDEs, Tracker Error (#661)
• has_continuous_callback() missing for VectorContinuousCallback (#662)
• Illegal inttoptr for SEIR model (#663)
• Huge pre-compilation time (#664)
• Conflicting solutions when solving a matrix system. (#667)
• Inconsistent solutions when solving a Matrix ODE problem (#668)
• VectorContinuousCallbacks seem broken? (#669)
• Solve does not support saveat vectors for ensemble problems (#671)
• [question] Interpolating adjoint for DDEs (#672)
• Centralizing the development of .github actions, workflows, and metadata (#673)
• Solving difference equations (#676)
• ContinuousCallback not firing (#677)
• Implicit solvers crash when solving an ODE system that contain a Dierckx spline (#678)
• ArrayPartitions of ArrayPartitions fail with implicit ODE solvers (#679)
• Cannot Precompile DifferentialEquations.jl (#683)
• Issue calling solve on a DDEProblem (#684)
• How to define a time event after a state event (#685)
• UndefVarError when using EnsembleDistributed() (#699)
• Failed to precompile, load error (#701)
• Decoupling tspan and initial time, t0 (#705)

Merged pull requests:

• MassInstallAction: Install the TagBot workflow on this repository (#690) (@christopher-dG)
• MassInstallAction: Install the GitHubActionsCI workflow on this repository (#698) (@christopher-dG)
• CompatHelper: bump compat for "Reexport" to "1.0" (#708) (@github-actions[bot])

v6.15.0

DifferentialEquations v6.15.0

Diff since v6.14.0

Closed issues:

• ArrayPartition doesn't work with SDE problems (#386)
• Monte Carlo simulations of JumpProblems with VariableRateJump (#417)
• save_onlyend simple argument syntax for solve only returning the end time (#448)
• How do you retrieve the algorithm chosen when one isn't specified? (#484)
• Add simple SDE solvers to the RegularJump interface (#495)
• ExtendedJumpArray broadcast is incompatible with non-constant scalars (#508)
• Re-branding for multiple language compatibility (#519)
• Indexing ragged size EnsembleSolutions (#597)
• Sobol example in Global Sensitivity Analysis Fails (#605)
• Precompile OrdinaryDiffEq failed (#608)
• Flag for saving outputs of inplace functions (#609)
• The end of concrete_solve (#610)
• Interpolation broken for jump diffusion solutions (#613)
• Untested edge case when stepping from the end of a known tspan (#616)
• MethodError: no method matching similar(::Float64) when using a vector of dimension 1 (#619)
• Performance of ODE solver on GPU in the presence of parameters (#620)
• Parameters are 'nothing' when passing as an explicit argument to ODEProblem (#621)
• Failed while USING DifferentialEquations.jl in Julia 1.4.1 (#623)
• vscode error running an open .jl file (#627)
• Dense solution is a 1st order linear interpolation, whereas 4th order spline was promised (#629)
• Working DAE example (#630)

Merged pull requests:

• Update README.md (#612) (@mkg33)
• Update LICENSE.md [ci skip] (#614) (@YingboMa)
• CompatHelper: bump compat for "DiffEqNoiseProcess" to "5.0" (#626) (@github-actions[bot])
• Fix method selection for Float32s (#628) (@dextorious)

v6.14.0

DifferentialEquations v6.14.0

Diff since v6.13.0

Closed issues:

• DImplicitEuler and DABDF2 fail with LabelledArrays (#581)
• EnsembleProblem with JumpProblem yielding identical traces (#585)
• Using remake for EnsembleProblem (#586)
• LabelledArrays with Autodiff Stiff solvers (#588)
• Event repeated at the same time using ContinuousCallback and adaptive = false (#590)
• Suggestion for exploiting separable linear-nonlinear ODEs (#591)
• On Julia 1.5 importing produces warnings about fatally broken incremental compilation (#593)
• Discrete stochastic simulations method error (#594)
• Failed to precompule DifferentialEquation due to UndefVarError (#595)
• Reconfigure callbacks in the affect function (#598)
• Method Error when trying to solve an ODE (#599)
• Precompilation errors on both stable and master (#602)

Merged pull requests:

• CompatHelper: bump compat for "DiffEqNoiseProcess" to "4.0" (#604) (@github-actions[bot])

v6.13.0

DifferentialEquations v6.13.0

Diff since v6.12.0

Closed issues:

• Rosenbrock23 gives wrongs solution when autodiff=false (#580)
• Example of using DifferentialEquations.jl for SIR model on a graph (#583)

Merged pull requests:

• CompatHelper: bump compat for "Sundials" to "4.0" (#587) (@github-actions[bot])

v6.12.0

DifferentialEquations v6.12.0

Diff since v6.11.0

Closed issues:

• Docs: parameter dependence for ODEProblem (#367)
• Second order sensitivities (#375)
• Sparse matrices as parameters - MethodError: Cannot convert an object of type Tuple{SparseMatrixCSC{Float64,Int64},...} (#378)
• L2Loss() fails for Monte Carlo problems if saveat is not used (#392)
• Jacobians for SDEs (#402)
• Performance Issue: Interpolation of callbacks with StaticArrays (#407)
• Find a console-based progress monitoring package that works (#424)
• DifferentialEquations and Unitful (#455)
• Using CuArrays with complex arrays (#460)
• Simultaneous Zero-crossing behavior (#516)
• DifferentialEquations fail during precompile (#539)
• ContinuousCallback: affect! is not always called at the crossed condition (#551)
• Default to having progress bars on? (#562)
• concrete_solve example in the docs doesn't work (#569)
• Event Handling - Tutorial (Example 1: Bouncing Ball) (#570)
• Use an array of arrays as u prototype (#572)
• Julia 1.3.1-2 the new update caused the following error when trying to install the differential equations package (#573)
• Investigations of BLAS overloading for Dual numbers (#574)
• This is a trival set of mistakes I found... spelling mistakes in the websites of GSoC in JSoC. (#576)
• Error if there is a callback both in the problem and when solving (#578)

Merged pull requests:

• Add back ModelingToolkit-based ParameterizedFunctions (#579) (@ChrisRackauckas)