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Description
The SDESystem example on the MTK docu does not work with MTK version 10.0.1.
using ModelingToolkit
using ModelingToolkit: t_nounits as t, D_nounits as D
@parameters σ ρ β
@variables x(t) y(t) z(t)
eqs = [D(x) ~ σ*(y-x),
D(y) ~ x*(ρ-z)-y,
D(z) ~ x*y - β*z]
noiseeqs = [0.1*x,
0.1*y,
0.1*z]
@named de = SDESystem(eqs,noiseeqs,t,[x,y,z],[σ,ρ,β]; tspan = (0, 1000.0))
Error & Stacktrace
ERROR: MethodError: no method matching System(::Vector{…}, ::Num, ::Vector{…}, ::Vector{…}, ::Vector{…}; noise_eqs::Vector{…}, name::Symbol, tspan::Tuple{…})
This error has been manually thrown, explicitly, so the method may exist but be intentionally marked as unimplemented.
Closest candidates are:
System(::Vector{Equation}, ::Any, ::Any, ::Any, ::Any; constraints, noise_eqs, jumps, costs, consolidate, observed, parameter_dependencies, defaults, guesses, systems, initialization_eqs, continuous_events, discrete_events, connector_type, assertions, metadata, gui_metadata, is_dde, tstops, tearing_state, ignored_connections, parent, description, name, discover_from_metadata, initializesystem, is_initializesystem, preface, checks) got unsupported keyword argument "tspan"
@ ModelingToolkit ~/.julia/packages/ModelingToolkit/DSTHC/src/systems/system.jl:325
System(::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any; ...)
@ ModelingToolkit ~/.julia/packages/ModelingToolkit/DSTHC/src/systems/system.jl:252
System(::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any, ::Any; ...)
@ ModelingToolkit ~/.julia/packages/ModelingToolkit/DSTHC/src/systems/system.jl:252
...
Stacktrace:
[1] kwerr(::@NamedTuple{…}, ::Type, ::Vector{…}, ::Num, ::Vector{…}, ::Vector{…}, ::Vector{…})
@ Base ./error.jl:165
[2] SDESystem(eqs::Vector{…}, noise::Vector{…}, iv::Num, dvs::Vector{…}, ps::Vector{…}; is_scalar_noise::Bool, parameter_dependencies::Vector{…}, kwargs::@Kwargs{…})
@ ModelingToolkit ~/.julia/packages/ModelingToolkit/DSTHC/src/systems/system.jl:1007
[3] top-level scope
@ ~/.julia/packages/ModelingToolkit/DSTHC/src/systems/abstractsystem.jl:2192
Some type information was truncated. Use `show(err)` to see complete types.