plot.ncvsurv.func {ncvreg}

Plot survival curve for ncvsurv model

Description

Plot survival curve for a model that has been fit using ncvsurv() followed by a prediction of the survival function using predict.ncvsurv().

Usage

## S3 method for class 'ncvsurv.func'
plot(x, alpha = 1, ...)

Arguments

x

A ncvsurv.func object, which is returned by predict.ncvsurv() if type='survival' is specified. See examples.

alpha

Controls alpha-blending (i.e., transparency). Useful if many overlapping lines are present.

...

Other graphical parameters to pass to plot

Author(s)

Patrick Breheny

See Also

ncvsurv(), predict.ncvsurv()

Examples

data(Lung)
X <- Lung$X
y <- Lung$y

fit <- ncvsurv(X, y)

# A single survival curve
S <- predict(fit, X[1,], type='survival', lambda=.15)
plot(S, xlim=c(0,200))

# Lots of survival curves
S <- predict(fit, X, type='survival', lambda=.08)
plot(S, xlim=c(0,200), alpha=0.3)