plot_funregions: Plot the transformation function used for the marker

In movieROC: Visualizing the Decision Rules Underlying Binary Classification

Plot the transformation function used for the marker

Description

This function plots the transformation function used for the marker for an object of class ‘hroc’ or class ‘groc’ (this one is only allowed for objects with self-contained classification subsets). Over this graphic, the classification region for a particular FPR chosen by the user is displayed in blue color. If the user specifies a second FPR (FPR2), the classification region is displayed on the same graphic in red color.

Usage

## S3 method for class 'hroc'
plot_funregions(x, FPR = 0.15, FPR2 = NULL, 
  plot.subsets = TRUE, new.window = FALSE, main = NULL, ylim = NULL, ...)
## S3 method for class 'groc'
plot_funregions(x, FPR = 0.15, FPR2 = NULL, 
  plot.subsets = TRUE, new.window = FALSE, main = NULL, ylim = NULL, ...)

Arguments

x	An object of class ‘hroc’ or ‘groc’.
FPR	False-positive rate used to display the classification region in blue. Default: 0.15.
FPR2	Other false-positive rate used to display the classification region in red. Default: none.
plot.subsets	If TRUE, the classification subsets are displayed. Otherwise, only the transformation function. Default: TRUE.
new.window	If TRUE, graphics are displayed in a new window. Default: FALSE.
main	Title for the plot.
ylim	Range for the y-axis.
...	Other parameters to be passed. Not used.

Value

A plot of the transformation function used for the marker with the selected graphical parameters

Examples

data(HCC)

hroc_cg18384097 <- hROC(X = HCC$cg18384097, D = HCC$tumor, 
    formula.lrm = "D ~ rcs(X,8)") 
plot_funregions(hroc_cg18384097)
plot_funregions(hroc_cg18384097, FPR = .1, FPR2 = .5)

movieROC documentation built on April 4, 2025, 4:58 a.m.