aucRoc {caret} | R Documentation |
This function uses the trapezoidal rule to calculate the area. If the area is less than .5, then 1 - area
is used.
aucRoc(object)
object |
object from the roc function or a matrix/data
frame with columns named "sensitivity" and "specificity" |
a scalar number
Max Kuhn
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)