GroupSeq (version 1.0)

groupseq: starts the programm

Description

This function is used to start the programm where user can choose between a GUI (default e.g. mode=="g") which is recommended or if for any reason GUI does not work user can choose interactive mode ( mode=="c") taking place in the cosole of R. The program itself refers to an earlier Fortran Implementation done by Lan DeMets. I took the skeleton of the program, improved code by decomposing it into more functions, improved algorithms which were ok for the fast Fortran but took to long in R. I added a GUI for much more convenient and faster working and last but not least results can be saved into simple *.html Files to process with them further on.

Usage

groupseq(mode = chosenMode)

Arguments

mode

default is mode=="g" to use the GUI but user may choose mode=="c" to use the R console for example if GUI does not work for any reason.

Details

The GUI is build within the Tcl/Tk interface of R. I attended to only use the standard Tcl/Tk package, to keep as much compatibility as possible. So you won�t have to install additional Tcl/Tk packages which might cause problems sometimes. Moreover the GUI should work on all platforms. Each task and calculation will open in a new window with possibilty to save results into a *.html File. So you are able to multitask and to compare results directly and decide which of them you want to save.

References

http://www.biostat.wisc.edu/landemets/

See Also

guiMode, consoleMode

Examples

## call GUI
# groupseq() or groupseq(mode="g")

## call console mode
# groupseq(mode="c")