GroupSeq (version 1.0)

calculateTask3: computes probabilities given bounds and drift

Description

This function computes probabilities given bounds and drift

Usage

calculateTask3(n, nMax, t, t2, t2max, t3, drift, equallySpacedTimesInput, secondTimeScaleIsUsed, BoundsSymmetry, alpha, phi, usedFunction, TruncateBoundsInput, enterBoundsManually, upperBounds, lowerBounds)

Arguments

n

is the number of interim analyses

nMax

maximum number of interim analysis (here: limited to 25)

t

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

t2

is the second or information time scale, for covariances

t2max

maximum of t2

t3

t2 divided by the maximum information, if needed

drift

vector of drift parameters

equallySpacedTimesInput

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

secondTimeScaleIsUsed

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

BoundsSymmetry

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

alpha

is the desired overall size.

phi

optional Parameter referring to Power Family

usedFunction

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

TruncateBoundsInput

is Truncation Point for bounds (default is no truncation)

enterBoundsManually

denotes whether bounds are entered by user or have to be computed by spending function

upperBounds

vector of upper bounds

lowerBounds

vector of lower bounds

See Also

groupseq, calculateTask1 calculateTask2, calculateTask4

Examples

## function is called within gui - so example is senseless