Hi, I’m getting to grips with ModelingToolkit.jl. Let’s take the ODE building example in the tutorial: @parameters t σ ρ β @variables x(t) y(t) z(t) @derivatives D'~t eqs = [D(x) ~ σ*(y-x), D(y) ~ x*(ρ-z)-y, D(z) ~ x*y - β*z] First question: can I substitute the parameters in eqs w…

Parameter substitutions in ModelingToolkit.jl

DR59 February 13, 2020, 3:06pm 2

More simply: given an equation with some variables, how do I substitute a different set of variables/constants in the equation?

Topic		Replies	Views
Optimization of parameters of a dynamic problem with ModelingToolkit Modelling & Simulations question , optimization , modelingtoolkit	3	678	September 14, 2023
Some problem when optimizing the ODEProblem parameters General Usage optimization , modelingtoolkit	4	200	May 3, 2024
Automatic differentiation with subset of parameters in ModelingToolkit Optimization (Mathematical) diffeq , modelingtoolkit	6	503	August 19, 2022
Optimization problem inside `ODESystem` Modelling & Simulations	2	50	December 4, 2024
Change of variables in ModelingToolkit.jl General Usage question , modelingtoolkit	10	363	May 21, 2024