lift_plot: Static RBF Kernel Lift Plot

In twinsvm: Twin Support Vector Machines

Static RBF Kernel Lift Plot

Description

Maps two-dimensional data to a third RBF height and draws a static oblique projection. The height is ⁠exp(-gamma * ||x - center||^2)⁠, so points near the center rise while points farther away stay low. A translucent plane is drawn halfway between the two class mean heights.

Usage

lift_plot(x, y, gamma = 1, center = NULL)

Arguments

x	Numeric two-column matrix or data frame.
y	Two-class response.
gamma	Positive RBF scale.
center	Optional numeric length-two center for the RBF bump. If NULL, the centroid of the inner class is used.

Value

A ggplot object.

See Also

Other visualization: compare_methods(), kernel_lift(), lift_plotly()

Examples

set.seed(20)
dat <- gen_circles(80, noise = 0.04)
lift_plot(dat$x, dat$y, gamma = 1)

twinsvm documentation built on June 10, 2026, 1:06 a.m.