sod 10.0: Constructing 3-level and Mixed-level Second-Order Designs
(c) 2018 Design Computing (http://designcomputing.net/)

Note: Best design for 3 factors in 15 runs.

Try	iter	A1	A2	rmax	rave	trace	det*
2	7	0	0	0.071	0.006	2.271	0.366

Design Plan for try 2 using seed 1842348385:

1	0	-1	
-1	1	0	
-1	-1	0	
0	-1	-1	
-1	0	-1	
0	1	1	
1	1	0	
1	0	1	
-1	0	1	
1	-1	0	
0	-1	1	
0	1	-1	
0	0	0	
0	0	0	
0	0	0	

X'X

15	8	8	8	0	0	0	0	0	0	
	8	4	4	0	0	0	0	0	0	
		8	4	0	0	0	0	0	0	
			8	0	0	0	0	0	0	
				8	0	0	0	0	0	
					8	0	0	0	0	
						8	0	0	0	
							4	0	0	
								4	0	
									4	


inverse(X'X)

0.333	-0.167	-0.167	-0.167	0	0	0	0	0	-0	
	0.271	0.021	0.021	0	0	0	0	0	-0	
		0.271	0.021	0	0	0	0	0	-0	
			0.271	0	0	0	0	0	-0	
				0.125	0	0	0	0	-0	
					0.125	0	0	0	-0	
						0.125	0	0	-0	
							0.25	0	-0	
								0.25	-0	
									0.25	

Note: sod used 0.195 seconds.
Note: Evaluation copy - purchase at www.designcomputing.net