Response Surface Analysis
Show a table of AIC model comparisons
Range check for the CA/RRCA model
Range check for the CL/RRCL model
Compare a full list of RSA models
Compare two specific RSA models
Computes confidence intervals for RSA parameters, standard or bootstra...
Plots a response surface of a polynomial equation of second degree wit...
Return fitted values of a RSA model
Retrieves several variables from an RSA object
Plots a flow chart with model comparisons
Create a movie of plotRSA plots, with changing surface and/or rotation
Plots a response surface of a polynomial equation of second degree
Return residual values of a RSA model
Performs several RSA model tests on a data set with two predictors
Surface tests
Advanced response surface analysis. The main function RSA computes and compares several nested polynomial regression models (full second- or third-order polynomial, shifted and rotated squared difference model, rising ridge surfaces, basic squared difference model, asymmetric or level-dependent congruence effect models). The package provides plotting functions for 3d wireframe surfaces, interactive 3d plots, and contour plots. Calculates many surface parameters (a1 to a5, principal axes, stationary point, eigenvalues) and provides standard, robust, or bootstrapped standard errors and confidence intervals for them.