Modeling and Multivariate Methods - SAS

Chapter 24 Visualizing, Optimizing, and Simulating Response Surfaces 579
Mixture Profiler
Constraint Shading
Specifying limits to the Y's shades the areas outside the limits as shown in Figure 24.28. The unshaded
white area becomes the feasible region.
Figure 24.28 Settings for Contour Shading
Setting
appropriate
limits on
responses
illustrates
the feasible
region
If a response column’s Spec Limits column property has values for Lower Spec Limit or Upper Spec Limit,
those values are used as the initial values for Lo Limit and Hi Limit.
Mixture Profiler
The Mixture Profiler shows response contours for mixture experiment models, where three or more factors
in the experiment are components (ingredients) in a mixture. The Mixture Profiler is useful for visualizing
and optimizing response surfaces resulting from mixture experiments.
Figure 24.29 shows an example of the Mixture Profiler for the sample data in Plasticizer.jmp. To generate
the graph shown, select Mixture Profiler from the Graph menu. In the resulting Mixture Profiler launch
dialog, assign Pred Formula Y to the Y, Prediction Formula role and click OK. Delete the Lo and Hi limits
from p1, p2, and p3.