I need to do Design of Experiments with Box-Behnken design. when i enter "dBB = bbdesign(3)" it will generate a 18x3 matrix like shown in figure. Here -1 means lower point. 0 means middle level.1 means upper level. But how can i set level for my levels to my value. The levels also shown in the figure.
i need to get the matrix like 40, 30 , 0.5 figure shown not -1, 0, 1.