R: Plot Stopping Rule (Binary Data)

plot.rule.bin

R Documentation

Plot Stopping Rule (Binary Data)

Description

Display a stopping rule graphically as a curve

Usage

## S3 method for class 'rule.bin'
plot(
  x,
  smooth = TRUE,
  xlim = c(0, max(x$ns)),
  ylim = c(0, max(x$Rule[, 2]) + 1),
  xlab = "# Evaluable",
  ylab = "# Events",
  ...
)

Arguments

`x`	A 'rule.bin' object calculated by `calc.rule.bin()` function
`smooth`	Binary indicator of whether stopping rule boundary should be smoothed by linear interpolation between evaluation points
`xlim`	The x limits (x1, x2) of the plot. Note that x1 > x2 is allowed and leads to a â€˜reversed axisâ€™.
`ylim`	The y limits of the plot.
`xlab`	The title for the x axis
`ylab`	The title for the y axis
`...`	Other options to be passed to generic `plot` function

Value

No return value; function solely generates a plot

Examples

# Binomial Pocock test in 50 patient cohort at 10% level, expected toxicity probability of 20%
poc_rule = calc.rule.bin(ns=1:50,p0=0.20,alpha=0.10,type="Pocock")

# Plot stopping boundary with smoothing
plot(poc_rule,col="blue")