lines.roc {pROC} | R Documentation |
This convenience function adds a ROC line to a ROC curve.
## S3 method for class 'roc' lines(x, ...) ## S3 method for class 'smooth.roc' lines(x, ...) ## S3 method for class 'roc' lines.roc(x, lwd=2, ...) ## S3 method for class 'formula' lines.roc(x, data, ...) ## Default S3 method: lines.roc(x, predictor, ...) ## S3 method for class 'smooth.roc' lines.roc(x, ...)
x |
a roc object from the roc function (for plot.roc.roc), a formula (for plot.roc.formula) or a response vector (for plot.roc.default). |
predictor, data |
arguments for the roc function. |
lwd |
line width (see |
... |
graphical parameters for |
This function returns a list of class “roc” invisibly. See roc
for more details.
data(aSAH) rocobj <- plot.roc(aSAH$outcome, aSAH$s100b, type="n") lines(rocobj, type="b", pch=21, col="blue", bg="grey") # Without using 'lines': rocobj <- plot.roc(aSAH$outcome, aSAH$s100b, type="b", pch=21, col="blue", bg="grey")