Plot the cross-validation curve produced by cv.ptLasso, as a function of the alpha values used.

A plot is produced, and nothing is returned.

Usage

# S3 method for class 'cv.ptLasso'
plot(x, plot.alphahat = FALSE, ...)

Arguments

x

Fitted "cv.ptLasso" object.

plot.alphahat

If TRUE, show a dashed vertical line indicating the single value of alpha that maximized overall cross-validated performance.

...

Other graphical parameters to plot.

See also

ptLasso, cv.ptLasso and predict.cv.ptLasso.

Author

Erin Craig and Rob Tibshirani
Maintainer: Erin Craig <erincr@stanford.edu>

Examples

set.seed(1234)
out = gaussian.example.data()
x = out$x; y=out$y; groups = out$group

cvfit = cv.ptLasso(x, y, groups = groups, family = "gaussian", type.measure = "mse")
plot(cvfit)