Rotatable
Main Help
RSM
Setting up a RSM
RSM Array
• Rotatable
• Center point
Formula
Design of experiments (DOE)
Full version of DevelveFor commercial use 75 EURO
RSM
Setting up a RSM
RSM Array
• Rotatable
• Center point
Formula
Design of experiments (DOE)
Full version of DevelveFor commercial use 75 EURO
Main Help
Factorial Arrays
Full Factorial Array
Orthogonal Array
Plackett–Burman Array
Box-Behnken design
Central Composite design Design of experiments (DOE)
RSM
Factorial Arrays
Full Factorial Array
Orthogonal Array
Plackett–Burman Array
Box-Behnken design
Central Composite design Design of experiments (DOE)
RSM
Rotatability is needed for a Response Surface design. A Matrix is rotatable if all the point have the same distance to the Center point.
Rotatable is desired for the quadratic fitting of the model.
| 2 Levels | 3 Levels | |
| Non linear response |  Linear |  Quadratic |
Examples of rotatabel Designs
.png) .png) Central Composite design  Box-Behnken design |
| Blue Center point |
Examples of a not rotatabel Design
As visible in the graphical image of a 3 factor Full Factorial Design with 3 levels, the distance to the Center point variates.