plot.fut: Plot the planned futility boundaries

In grpseq: Group Sequential Analysis of Clinical Trials

Description

Plot the planned futility boundaries in B- or z-values as a function of information time.

Usage

## S3 method for class 'fut'
plot(
  x,
  scale = "z",
  add = FALSE,
  lty = 8,
  xlab = "Info Time",
  ylab = "z score",
  type = "b",
  pch = 1,
  cex = 1,
  main = "Futility Boundary for the Planned Test",
  xlim = c(0, 1.1),
  ylim = NULL,
  ...
)

Arguments

x	An object returned by fut.
scale	"z": plot z-values; "b": plot B-values.
add	If TRUE, the curve will be overlaid on an existing plot; otherwise, a separate plot will be constructed.
lty	Line type for the segments connecting the z-/B-value points.
xlab	A label for the x axis, defaults to a description of x.
ylab	A label for the y axis, defaults to a description of y.
type	Plot type. "l": only line segments; "p": only z-/B-value points; "b": both.
pch	Point types for the z-/B-values.
cex	Point size.
main	A main title for the plot.
xlim	The x limits of the plot.
ylim	The y limits of the plot.
...	Other arguments that can be passed to the underlying plot method.

Value

No return value, called for side effects.

See Also

fut, summary.fut, powerplot.

Examples

# see example for fut

grpseq documentation built on Dec. 7, 2021, 1:06 a.m.