users] unidentified cause of "F OR DERIVATIVE RETURNED BY PRED
IS INFINITE (INF) OR NOT A NUMBER (NAN)"
I think this is overkill to have 10 occasions, and this could be a problem. Try
to start first with 2 occasions (e.g, first 5 doses and the rest). If this
works it means that it is j
I think this is overkill to have 10 occasions, and this could be a
problem. Try to start first with 2 occasions (e.g, first 5 doses and the
rest). If this works it means that it is just a numerical problem.
Also, just to check, try
Y=LOG(F+0.0001)+EPS_EXP
to remove the possibility of F=0.
Than
