[Numpy-discussion] sort bug
Anton Sherwood
anton.sherwood at gmail.com
Sun Apr 29 14:15:59 EDT 2007
> Anton Sherwood wrote:
> > I'm using eigenvectors of a graph's adjacency matrix as "topological"
> > coordinates of the graph's vertices as embedded in 3space (something I
> > learned about just recently). Whenever I've done this with a graph that
> > *does* have a good 3d embedding, using the first eigenvector results in
> > a flat model: apparently the first is not independent, at least in such
> > cases. . . .
Charles R Harris wrote:
> . . . the embedding part sounds interesting,
> I'll have to think about why that works.
It's a mystery to me: I never did study enough matrix algebra to get a
feel for eigenvectors (indeed this is the first time I've had anything
to do with them).
I'll happily share my code with anyone who wants to experiment with it.
--
Anton Sherwood, http://www.ogre.nu/
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