On 5/2/12 5:28 PM, Stéfan van der Walt wrote: > On Wed, May 2, 2012 at 3:20 PM, Francesc Alted<[email protected]> wrote: >> On 5/2/12 4:07 PM, Stéfan van der Walt wrote: >> Well, as the OP said, coo_matrix does not support dimensions larger than >> 2, right? > That's just an implementation detail, I would imagine--I'm trying to > figure out if there is a new principle behind "synthetic dimensions"?
No, no new things under the sun. We were just talking about many different things and this suddenly appeared in our talk. Nothing really serious. > By the way, David Cournapeau mentioned using b-trees for sparse ops a > while ago; did you ever talk to him about those ideas? Yup, the b-tree idea fits very well for indexing the coordinates. Although one problem with b-trees is that they do not compress well in general. -- Francesc Alted _______________________________________________ NumPy-Discussion mailing list [email protected] http://mail.scipy.org/mailman/listinfo/numpy-discussion
