AUC: Area Under Curve
In sROC: Nonparametric Smooth ROC Curves for Continuous Data

Description Usage Arguments Details Value Author(s) See Also Examples

View source: R/sROC.R

Compute the area under curve of estimated ROC curve.

1	AUC(ROC, method="Simpson", ngrid=256)

`ROC`	a “ROC” object generated by kROC(...).
`method`	a character string giving the numerical integration method to be used. This must be either “Simpson” or “Trapez”.
`ngrid`	the number of grids for numerical integration.

Compute the area under curve of estimated ROC curve.

An object of class “AUC”.

X.F. Wang wangx6@ccf.org

kROC.

set.seed(100)
n <- 200
x <- rlnorm(n, mean=2, sd=1)
y <- rnorm(n,mean=2,sd=2)

xy.ROC <- kROC(c(x,NA,NA),c(y,1.2, NA), na.rm=TRUE)
plot(xy.ROC)
AUC(xy.ROC)