Printing progress and updates messages SDE problem

[ChrisRackauckas]

@matt1

I read here that this should be possible with “progress message” at least for ODE’s. However I don’t know the precise syntax to make it work.

Common Solver Options (Solve Keyword Arguments) · DifferentialEquations.jl

function prog_message(dt, u, p, t)
    "Print a message here for the progress bar"
end
solution=solve(problem,SOSRA(),reltol=1e-3,abstol=1e-3,save_everystep = false,progress_true,progress_steps=1000, progress_message = prog_message) 

@matt1

Also, I would like to possibly print these updates into a .txt file rather than having them in the terminal. Is there a way to do that?

You can use a DiscreteCallback with condition=true so it launches after each step and just write any function into the affect! to perform the logging. See:

Event Handling and Callback Functions · DifferentialEquations.jl