Nathaniel, Of the two characteristics to which I pointed, I feel that the rectangularity check is the more important. I gave an example of a typo which demonstrated this problem.
The error message reported that pinv does not have a conjugate function which, I suggest, is a totally misleading error message. In these circumstances, I hope that the Development Team will wish to treat this as a bug. Regards, Colin W. On 06-Jan-15 8:20 PM, Nathaniel Smith wrote: > Hi Colin, > > On Wed, Jan 7, 2015 at 12:58 AM, cjw <c...@ncf.ca> wrote: >> My recollection, from discussions, at the time of the introduction of the @ >> operator, was that there was no intention to disturb the existing Matrix >> class. > Yeah, we're not going to be making any major changes to the > numpy.matrix class -- e.g. we certainly aren't going to disallow > non-numeric data types at this point. > >> I see the matrix as a long recognized mathematical entity. On the other >> hand, the array is a very useful computational construct, used in a number >> of computer languages. >> >> Since matrices are now part of some high school curricula, I urge that they >> be treated appropriately in Numpy. Further, I suggest that consideration be >> given to establishing V and VT sub-classes, to cover vectors and transposed >> vectors. > The numpy devs don't really have the interest or the skills to create > a great library for pedagogical use in high schools. If you're > interested in an interface like this, then I'd suggest creating a new > package focused specifically on that (which might use numpy > internally). There's really no advantage in glomming this into numpy > proper. > > -n > _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
