aucRoc

From caret v3.45 by Max Kuhn

Compute the area under an ROC curve

This function uses the trapezoidal rule to calculate the area. If the area is less than .5, then 1 - area is used.

Keywords: manip

Usage

aucRoc(object)

Arguments

object: object from the roc function or a matrix/data frame with columns named "sensitivity" and "specificity"

Value

a scalar number

Examples

set.seed(6)
testData <- data.frame(
   x = c(rnorm(200), rnorm(200) + 1),
   group = factor(rep(letters[1:2], each = 200)))
   
densityplot(~testData$x, groups = testData$group, auto.key = TRUE)   
   
rocValues <- roc(testData$x, testData$group)
aucRoc(rocValues)

Documentation reproduced from package caret, version 3.45, License: GPL-2

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