Comments for Physion Consulting Blog

Comment on Deprecating scikits.ann in favor of scipy.spatial by Neil Davis

Neil Davis — Tue, 02 Mar 2010 14:10:48 +0000

Would it be possible for you to mention this on the scikits.ann sites. I spent some time fighting the installation of the wrapper and it would have been nice to have known that there is KDTree support in scipy.spatial, the google searches I tried turned up the scikits.ann but nothing about scipy.spatial.

Thanks,
Neil

Comment on Container performance in Matlab by Peter Meilstrup

Peter Meilstrup — Wed, 05 Aug 2009 23:54:31 +0000

I reported this issue in regards to matlab’s closures a while ago:

http://www.mathworks.com/matlabcentral/newsreader/view_thread/160073#404034

Seems the new objects have the same problem as the closures.

Comment on Container performance in Matlab by Ian

Ian — Wed, 24 Jun 2009 11:55:55 +0000

Thanks a lot, I’ll see what I can do with it, and eventually let you know if and how it worked.
Again, thanks !

Comment on Container performance in Matlab by Barry

Barry — Tue, 23 Jun 2009 22:09:08 +0000

Ian, you can find the matlabxg page at http://physionconsulting.com/matlabxg. The code is not being maintained anymore, but some interest might convince us to update it.

Comment on Container performance in Matlab by barry

barry — Tue, 23 Jun 2009 16:29:36 +0000

It looks like matlabxg didn’t make the cut when my old lab moved to a new server. I’ll see if I can resurrect a copy and post it.

Comment on Container performance in Matlab by Ian

Ian — Tue, 23 Jun 2009 08:03:01 +0000

I was looking for matlabxg, but then I thought, maybe it’s deprecated… Any idea where to find it (if, as I said, it’s not deprecated).
Thanks

Comment on scikits.ann in PyPI by Barry

Barry — Tue, 02 Sep 2008 02:24:00 +0000

Three cheers for Rob! I will make the change in SVN.

Rob, if you contact me by email, I will send you your choice something swig-able.

-bary

Comment on scikits.ann in PyPI by Rob

Rob — Fri, 29 Aug 2008 20:36:00 +0000

patrick,

I had the same problem. After A LOT of searching I finally found the solution. I think that it has to do with SWIG wrapping on 64-bit machines. Anyway, in the __init__.py file, change the line:
"idx = np.empty((pts.shape[0], k), dtype= np.int_)"

to be :

"idx = np.empty((pts.shape[0], k), dtype= 'i')"

After doing this, all of the tests ran correctly for me.

--Rob

Comment on scikits.ann in PyPI by Barry

Barry — Thu, 13 Mar 2008 01:24:00 +0000

eli,

you should take an other look at the fromfunction doc string... there's no way to pass other positional arguments (i.e. "nth" in your code) to the function. You'll have to create a wrapper ala:
t = scikits.ann.kdtree(...)
nth =3
def knn_wrapper(i,j):
return t.knn([i,j], nth)[1][0][-1]

Comment on scikits.ann in PyPI by Barry

Barry — Thu, 13 Mar 2008 01:19:00 +0000

eli,

thanks for the code example. i’ll try to take a look at what’s going on in the next day or two…