plot method for support vector object — plot • kernlab

Plot a binary classification support vector machine object. The plot function returns a contour plot of the decision values.

# S4 method for class 'ksvm'
plot(object, data=NULL, grid = 50, slice = list())

Arguments

object: a ksvm classification object created by the ksvm function
data: a data frame or matrix containing data to be plotted
grid: granularity for the contour plot.
slice: a list of named numeric values for the dimensions held constant (only needed if more than two variables are used). Dimensions not specified are fixed at 0.

See also

Author

Alexandros Karatzoglou
alexandros.karatzoglou@ci.tuwien.ac.at

Examples

## Demo of the plot function
x <- rbind(matrix(rnorm(120),,2),matrix(rnorm(120,mean=3),,2))
y <- matrix(c(rep(1,60),rep(-1,60)))

svp <- ksvm(x,y,type="C-svc")
plot(svp,data=x)