Generates group sequential designs using alpha- and beta-spending functions or Wang-Tsiatis (e.g., O'Brien-Fleming and Pocock) boundary families. Many plotting capabilities as well as non-binding futility rules are available. Easily extended.
From Keaven's email:
Try to label points on x-axis without it looking too crowded and reasonably easy for user to interpolate. Perhaps every .25 or .2.
The y-axis should include timing=0 and 1.
From Keaven's email: Try to label points on x-axis without it looking too crowded and reasonably easy for user to interpolate. Perhaps every .25 or .2. The y-axis should include timing=0 and 1.