MXM (version 0.9.7)

ROC and area under the curve: ROC and area under the curve

Description

Receiver operating curve and area under the curve.

Usage

auc(group, preds, roc = FALSE, cutoffs = NULL)

Arguments

group

The true labels, either a factor or a numerical vector with two numbers only.

preds

The predicted values of each group.

roc

If you want the ROC to appear set it to TRUE.

cutoffs

If you provide a vector with decreasing numbers from 1 to 0 that will be used for the ROC, otherwise, the values from 1 to 0 with a step equal to -0.01 will be used.

Value

If the roc is set to FALSE, the area under the curve is returned only. Otherwise a list including If the roc is set to FALSE, the area under the curve is returned only. Otherwise a list including

Details

The ara under the curve is returned. The user has the option of getting the receiver operating curve as well.

See Also

SES, MMPC, testIndLogistic

Examples

# simulate a dataset with continuous data
g <- rbinom(150, 1, 0.6)
f <- rnorm(150)
auc(g, f, roc = TRUE)