Obtaining value of objective function after solving

[lmanan]

This is a feature request and not an issue: I was wondering if there is currently an API-based way (as opposed to looping over all selected nodes and edges and summing individual costs) of obtaining the cost of the objective function which is minimized, post the solving? If not, this would be a useful feature to have.

[tlambert03]

I believe that’s what ilpy.Solution.get_value() will give you: https://funkelab.github.io/ilpy/api.html#ilpy.Solution.get_value

I’m away from computer at the moment… so i can’t remember exactly how to get there from the motile Solver, but pretty sure it’s publicly accessible. Let me know if you can’t find it, or if it’s not what you’re looking for

[lmanan]

Thanks Talley.

solver =  motile.Solver(graph)
# add constraints
# add costs
solver.solve()
print(solver.solution.get_value())

works nicely!