Does the ROC curve have a partial AUC?

This function determines if the ROC curve has a partial AUC.

Usage

has.partial.auc(roc)
# S3 method for class 'auc'
has.partial.auc(roc)
# S3 method for class 'smooth.roc'
has.partial.auc(roc)
# S3 method for class 'roc'
has.partial.auc(roc)

Arguments

roc

the ROC curve to check.

Value

TRUE if the AUC is a partial AUC, FALSE otherwise.

If the AUC is not defined (i. e. if roc was called with AUC=FALSE), returns NULL.

See also

auc

Examples

data(aSAH)

# Full AUC
roc1 <- roc(aSAH$outcome, aSAH$s100b)
has.partial.auc(roc1)
has.partial.auc(auc(roc1))
has.partial.auc(smooth(roc1))

# Partial AUC
roc2 <- roc(aSAH$outcome, aSAH$s100b, partial.auc = c(1, 0.9))
has.partial.auc(roc2)
has.partial.auc(smooth(roc2))

# No AUC
roc3 <- roc(aSAH$outcome, aSAH$s100b, auc = FALSE)
has.partial.auc(roc3)