Flag = iscompatible(V1,V2)
V1, V2 [ model ] - Two VAR objects that will be tested for compatibility.Flag [ true | false ] - True if V1 and V2 can occur in an assignment, V1(...) = V2(...), or horizonatl concatenation, [V1,V2].The function compares the names of all variables, shocks, and parameters, and the composition of the state-space vectors and matrices.