Restrict combinations in DOEHello all,
I'm sorry if the answer is completely obvious, I just started using JMP. I'm trying to design a DOE containing 1 response and 10 factors, let's call them A-J for now. The factors are either excluded from the run, or present at a certain concentration. In the eventual design certain combinations are restricted, namely A-B, C-D, E-F, G-H and I-J. I tried playing around with the factor constraint option, but I can't figure it out. Can anyone clarify what to do? Thanks in advance!
DOEmacOSRe: Restrict combinations in DOEAre you saying that either A or B is present at some concentration, but not simultaneously? Then you might have one two-level categorical factor to identify the ingredient (e.g., levels A and 
and another factor for the non-zero concentration range.
Re: Restrict combinations in DOEIndeed, A and B can not be present simultaneous.
Ah yes that makes sense! But how does the factor for both ingredients being excluded look like? Or can I also make it 3-level categorical?
Re: Restrict combinations in DOEI generally recommend against using 0 as a level for a continuous factor. Using 0 turns it into a categorical factor (absent, present). It is better to use two non-zero levels so that you can see the effect of changing the level.
Do you still need to cover the case where both A and B are 0 (absent)?
Re: Restrict combinations in DOEI understand the case of making a categorical factor for A or B present, and why it is recommended. But I'm confused on what to do with the "A and B absent" factor.
