Add a distinct simdesign to a nl object
Details
This function creates a simdesign S4 class which can be added to a nl object. The distinct simdesign allows to create a parameter matrix with distinct parameterisations.
Variables in the experiment variable list need to provide a vector of distinct values (e.g. list(values=c(1,2,3,4)). All vectors of values must have the same length across variables.
The distinct simdesign then creates one simulation run for all first elements of these values vectors, one run for all second items, and so on. With this function, multiple distinct simulations can be run at once. Finally, the function reports a simdesign object.