Hello, I need some help with a more general modeling problem: suppose that I have observations from two matrices (plasma and blood) collected at the same time points. How can I set up my model to simultaneously describe the concentrations in both matrices when one matrix is contained in the other? I tried to set it up using a 2 or 3 compartment model in which I map plasma data to the central compartment (CObs1= Cplasma + CEps1) and then using the model text editor write: (CObs2 = Cplasma + Cperipheral + CEps2). I am pretty new to modeling and to phoenix environment and I am wondering if this is a correct way of doing it. Any suggestions would help. Thanks! Teodora
One suggestion as to how this could be written: C2 = CPlasma + CPeripheral # separate statement defining C2 observe(CObs2 = C2 + CEps2) # observe CObs2, with C2 as the prediction This gives the prediction a name, C2. (It doesn’t have to be C2. It can be any new name that’s not already in the model.) Simon