[Numpy-discussion] problems with numdifftools
Pauli Virtanen
pav at iki.fi
Tue Oct 26 15:28:59 EDT 2010
Tue, 26 Oct 2010 12:16:53 -0700, Nicolai Heitz wrote:
> I am not sure if you are the right persons to contact but if not I would
> appreciate a short notice and maybe an address where I can find help. I
> already posted this this message in an other python mailing list and
> they forwarded me to this list and told me that I might find help here.
Some comments:
1) General advice: When doing numerics, it's generally a good idea to use
units natural for the problem, and not SI ones. The numbers the computer
sees should be of order 1. Not all numerical algorithms are scale
invariant.
2) The scipy-user list might be even more appropriate:
http://mail.scipy.org/mailman/listinfo/scipy-user
3) The numdifftools authors might be more knowledgeable about their
software:
http://code.google.com/p/numdifftools/
If you are sure it's a bug in numdifftools, click the issues tab and
write a report. Be sure to include simple test case (like the one you
attached).
--
Pauli Virtanen
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