Adding constraints to design with discrete factors
Hello,I am trying to add constraints to design with 4 discrete factors (X1,X2,X3,X4), where all the factors have 3 levels. What is the best way to add constraint to specify that three factors (X2,X3,X4) should add up to 97%? I am assuming I'll have to add disallowed combinations script option for this but not sure about the script.