I am using DifferentialEquations.jl in a Julia Notebook. The code starts as: using DifferentalEquations using ParameterizedFunctions sir_ode = @ode_def SIRModel begin dS = -β*S*I dI = β*S*I-γ*I dR = γ*I end β γ When executed, I get the error: UndefVarError: @ode_def not defin…

@ode_def not defined

ChrisRackauckas May 23, 2020, 9:54pm 4

Did your packages update mid-notebook? If you do that, you need a new Julia session to use the newer versions, so it could be something like that?

1 Like

Topic		Replies	Views
Usage of @ode_def New to Julia	1	573	March 20, 2021
DifferentialEquations.jl - solve not defined New to Julia diffeq	21	6083	December 4, 2017
ODEProblem error --> LoadError: UndefVarError: _derivative not defined Modelling & Simulations question , diffeq , error	2	916	February 20, 2021
@ode_def macro leads to UndefRefError: access to undefined reference Optimization (Mathematical) error	7	904	March 2, 2020
Problem in solve() DifferentialEquations. None algorithm define Modelling & Simulations question , ode , differentialequation	11	211	April 25, 2024