plot.svm {e1071} | R Documentation |
Generates a scatter plot of the input data of a svm
fit for
classification models by highlighting the classes and support
vectors. Optionally, draws a filled contour plot of the class regions.
plot.svm(x, data, formula, fill = TRUE, grid = 50, slice = list(), ...)
x |
An object of class svm |
data |
data to visualize. Should be the same used for fitting. |
formula |
formula selecting the visualized two dimensions. Only needed if more than two input variables are used. |
fill |
switch indicating whether a contour plot for the class regions should be added. |
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. |
... |
additional graphics parameters passed to
filled.contour and plot . |
David Meyer
david.meyer@ci.tuwien.ac.at
## a simple example library(MASS) data(cats) m <- svm(Sex~., data = cats) plot(m, cats) ## more than two variables: fix 2 dimensions data(iris) m2 <- svm(Species~., data = iris) plot(m2, iris, Petal.Width ~ Petal.Length, slice = list(Sepal.Width = 3, Sepal.Length = 4))