ROC (version 1.48.0)

plot-methods: plot method for ROC curves

Description

plot method for ROC curves

Methods

x = rocc

plots an ROC curve object, with additional parameters available:

show.thresh (logical):

should marker threshold values be plotted?

jit (logical):

should plotted points be jittered?

add (logical):

increment to current plot?

line (logical):

plot points or lines?

threshCex (numeric):

if showing threshold values, set character expansion in text call to this value

threshYsh (numeric):

if showing threshold values, add this quantity to y coordinate of curve to plot the threshold value (should be negative for printing below point)

threshDig (numeric):

if showing threshold values, use this as the digits parameter to round to display the threshold

...

extra parameters passed to base plot, lines or points as needed

Examples

set.seed(123)
R1 <- rocdemo.sca( rbinom(40,1,.3), rnorm(40), dxrule.sca,
   caseLabel="new case", markerLabel="demo Marker" )
plot(R1, line=TRUE, show.thresh=TRUE, lwd=2, threshDig=2)
R2 <- rocdemo.sca( rbinom(40,1,.3), rnorm(40), dxrule.sca,
   caseLabel="new case", markerLabel="demo Marker" )
plot(R2, line=TRUE, add=TRUE, col="green", lwd=2 )
R3 <- rocdemo.sca( rbinom(40,1,.4), rnorm(40), dxrule.sca,
   caseLabel="new case", markerLabel="demo Marker" )
points(R3, col="red", pch=19)