calculateTask1

is the vector of analysis times on (0,1] scale

is the second or information time scale, for covariances

variable denoting whether equally spaced times (equallySpacedTimes==TRUE) or different spaced (equallySpacedTimes==FALSE)

equallySpacedTimesInput

second time/information scale (yes=>secondTimeScaleIsUsed==TRUE, no=>secondTimeScaleIsUsed==FALSE)

secondTimeScaleIsUsedInput

BoundsSymmetry==1 means one-sided bounds, BoundsSymmetry==2 means two-sided symmetric and BoundsSymmetry==3 means asymmetric bounds

BoundsSymmetry

alpha

optional Parameter referring to Power Family

indicates type I error spending rate function e.g. the function(s) the user choosed

usedFunction

is Truncation Point for bounds (default is no truncation)

TruncateBoundsInput

This function computes bounds using input given by the gui

methods

The computations are done with the alpha spending approach. Therefore
	interim analyses need not to be equally spaced, and their number need not to be specified in advance. 
	It is appropriate for any trial based on normally distributed test statistics with independent increments,
	survival studies, and certain longitudinal designs.
	Among other things it computes boundaries, power, drift and confidence intervals.
	The package provides this in a GUI and user has option of graphical output of the results
	and saving them into .html files.

calculateTask1: computes bounds using input given by the gui

Description

Usage

Arguments

See Also

Examples