Block specific attribute levels

[Michael_D]

Hello members,

my question is wheter it is possible to produce a blocked design with deifferent attribute levels per block. For example, I have the attribute price with the levels 5, 10, 15, 20. Now I want to have 5 and 10 in the first block and 15 and 20 in the second block. A further attribute might be distance to home with 1, 2, 3, 4 km. These attribute levels should vary free between both blocks.

Thank you in advance.

Best regards
Michael

[Michiel Bliemer]

That is not directly possible with Ngene, but you could so one of the following:

1. Generate two separate designs, or
2. Add an artificial attribute called Block and impose constraints something like ;cond; if(alt1.Block=1, price=[5,10]), if(alt1.Block=2, price=[15,20]).

Michiel