roc {bda} | R Documentation |
To compute and draw a ROC curve.
roc(y, x, z=NULL, event="less")
y |
Logical. Actual status: event or not. |
x |
Numberical vector based on which the diagnosis is performed. |
z |
Logical. A covariate for diagnosis in addition to 'x'. |
event |
Default: |
The TPR or sensitivity, and FPR or (1-specificity) will be returned together with the cutoffs.
The area under the ROC curve can be computed using summary
function.
The ROC curve can be ploted using plot
function.
B. Wang bwang@southalabama.edu
x <- rnorm(100) y <- rnorm(100)<0 out = roc(y,x)