logical. If TRUE, the fitted decision bound will be plotted. Default to TRUE
initdb
logical. If TRUE, the decision bound specified by the initial parameters will be plotted. Default to FALSE
lims
column matrix of the x, y, and z limits of the plot. If NULL, limits are calculated from the model matrix of x. Default to NULL.
npoints
number of points per dimension (i.e., x, y, and z) used to plot the decision bound surface. Default is 100.
alpha
alpha value for the decision bound surface(s) ranging from 0 (fully transparent) to 1 (opaque). Default is .5
fill
logical. If TRUE, decision bounds (if fitdb or initdb is set to TRUE) should be drawn with filled surfaces. If FALSE, a wire frame should be used. Default to TRUE.
smooth
logical. If TRUE, smooth shading should be used. Default to FALSE.
…
further arguments.
Details
This function produces a 3D scatter plot of data matrix of x and (optionally) quadratic decision boundaries specified within (i.e., x$par and/or x$initpar), using points3d function in the rgl package and contour3d function in the misc3d package respectively.
References
Daniel Adler, Oleg Nenadic and Walter Zucchini (2003) RGL: A R-library for 3D visualization with OpenGL