For performance reasons, the hash computation uses memory addresses which may change across executions. TO file - output results to file Redirect stdout to 'file'. The filename may be enclosed in single quotes. This option reduces the output size when tracing. It is the normal method to determine the cause of a Qhull error.
All Qhull errors report the last point added.
Use options 'TPn TVn ' to trace the addition of point n to the convex hull and stop when done. If used with option ' TWn ', 'TPn' turns off tracing after adding point n to the hull. Use options 'TPn TWn' to trace the addition of point n to the convex hull, partitions of point n, and wide merges. TRn - rerun qhull n times Option 'TRn' reruns Qhull n times. It is usually used with ' QJn ' to determine the probability that a given joggle will fail.