DifferentialEquations.jl parameter estimation for less than all states

When using parameter estimation via the DifferentialEquations.jl package, (how) is it possible to pass the indices of the solution states, for which measurement data is available, to for example the build_loss_objective?

It generates the output using the saveat at the t values. So:

http://docs.juliadiffeq.org/latest/basics/common_solver_opts.html#Output-Control-1

If you use save_idxs to be what indices you want to save at, then it will only save and calculate using those.

Great and thanks!