On Tue, Jul 29, 2008 at 09:24, Hans Meine <[EMAIL PROTECTED]> wrote: > On Dienstag 29 Juli 2008, Stéfan van der Walt wrote: >> > One way to achieve this is partial flattening, which I did like this: >> > >> > dat.reshape((numpy.prod(dat.shape[:3]), dat.shape[3])).sum(0) >> > >> > Is there a more elegant way to do this? >> >> That looks like a good way to do it. You can clean it up ever so slightly: >> >> x.reshape([-1, x.shape[-1]]).sum(axis=0) > > Thanks, that looks more elegant indeed. I am not sure if I've read about -1 > in shapes before. I assume it represents "the automatically determined rest" > and may only appear once? Should this be documented in the reshape > docstring?
Yes, yes, and yes. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
