On Sat, May 5, 2012 at 11:55 AM, Charles R Harris <charlesr.har...@gmail.com > wrote:
> > > On Sat, May 5, 2012 at 5:27 AM, Tom Aldcroft < > aldcr...@head.cfa.harvard.edu> wrote: > >> On Fri, May 4, 2012 at 11:44 PM, Ilan Schnell <ischn...@enthought.com> >> wrote: >> > Hi Chuck, >> > >> > thanks for the prompt reply. I as curious because because >> > someone was interested in adding http://pypi.python.org/pypi/Quaternion >> > to EPD, but Martin and Mark's implementation of quaternions >> > looks much better. >> >> Hi - >> >> I'm a co-author of the above mentioned Quaternion package. I agree >> the numpy_quaternion version would be better, but if there is no >> expectation that it will move forward I can offer to improve our >> Quaternion. A few months ago I played around with making it accept >> arbitrary array inputs (with similar shape of course) to essentially >> vectorize the transformations. We never got around to putting this in >> a release because of a perceived lack of interest / priorities... If >> this would be useful then let me know. >> >> > Would you be interested in carrying Martin's package forward? I'm not > opposed to having quaternions in numpy/scipy but there needs to be someone > to push it and deal with problems if they come up. Martin's package > disappeared in large part because Martin disappeared. I'd also like to hear > from Mark about other aspects, as there was also a simple rational user > type proposed that we were looking to put in as an extension 'test' type. > IIRC, there were some needed fixes to Numpy, some of which were postponed > in favor of larger changes. User types is one of the things we want ot get > fixed up. > I kind of like the idea of there being a package, separate from numpy, which collects these dtypes together. To start, the quaternion and the rational type could go in it, and eventually I think it would be nice to move datetime64 there as well. Maybe it could be called numpy-dtypes, or would a more creative name be better? -Mark > Chuck > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion > >
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