"Dave Feustel" <dfeustel at mindspring.com> wrote in news:ag1iqj$oi5$1 at slb3.atl.mindspring.net: > Is there a python module for doing quaternion arithmetic? i think scientific pythonhas support for it: http://dirac.cnrs-orleans.fr/ScientificPython/ chris -- Chris <cliechti at gmx.net>