Modeling and Multivariate Methods - SAS

Chapter 24 Visualizing, Optimizing, and Simulating Response Surfaces 559
The Profiler
Figure 24.4 Changing one Factor From 0 to 0.75
before
Drag this line to
a new value.
These prediction
traces change
height.
after
new current
predicted response
new current value
Prediction profiles are especially useful in multiple-response models to help judge which factor values can
optimize a complex set of criteria.
Click on a graph or drag the current value line right or left to change the factor’s current value. The response
values change as shown by a horizontal reference line in the body of the graph. Double-click in an axis to
bring up a dialog that changes its settings.
Thinking about Profiling as Cross-Sectioning
In the following example using Tiretread.jmp, look at the response surface of the expression for MODULUS
as a function of SULFUR and SILANE (holding SILICA constant). Now look at how a grid that cuts across
SILANE at the SULFUR value of 2.25. Note how the slice intersects the surface. If you transfer that down
below, it becomes the profile for SILANE. Similarly, note the grid across SULFUR at the SILANE value of
50. The intersection when transferred down to the SULFUR graph becomes the profile for SULFUR.