Response surface analysis
Description
Advanced response surface analysis. The main function RSA
compares several nested models (full polynomial, shifted and
rotated squared differences, shifted squared differences,
rising ridge surfaces, basic squared differences) and provides
plotting functions for 3d wireframe surfaces, interactive 3d
plots, and contour plots. Calculates many surface parameters
(a1 to a4, principal axes, stationary point, eigenvalues) and
provides standard, robust, or bootstrapped standard errors and
confidence intervals for them.